I'd assume most/all are Chinese indie groups. Sadly, they genuinely do not get what the problem with stolen art could be, and this is a recurring problem when they try to sell things on the international markets.

Took too long, sadly.

Not just mismanagement. That is common at all small indies, including successful ones. Look at the fall of Telltale as the most obvious current example.

With that game, to keep the example rolling, the bad decision started the moment they decided to develop a large-scale multiplayer survival sandbox game. Considering there are like 400 other games like that and all are built in a way to ensure the players can and should spend dozens of hours on them on a weekly basis, the entire scene was beyond any sensible or insensible definition of "oversaturated". (And We Happy Few would have bit the dust even without Gearbox ruining it completely.)

Thing is, once someone manages to get some investment and a small studio rolling, they suddenly believe they will have the next big thing, the next MineCraft, not realising that a hit like that in the entertainment industry is one in ten thousand or even less. And this gets significantly worse when you make a game aimed at the multiplayer crowd. Sure, it is enticing to do an MMO, since you can skip things like writing a cohesive story, but it will almost never get any player numbers.

So, it is not just mismanagement, the issue starts at the lack of sensibility and rationality. Starts at devs being seriously delusional about their own limits. It is a miracle that Sony did not totally bleed out Hello Games and they somehow managed to spend a crapload of their received money on fixing their junk to turn it into less of a junk, but not everyone can get Japanese as investors who can look at these decisions in a level-headed way and have some patience to salvage stuff. Most similar projects die.

And even then, single-player games can bit the dust. Look at Woolfe. It was actually a decent game, but with its lack of exposure, it tanked horribly.
Video game development is a risky venture. It is part of the entertainment industry, which is also a thing many devs fail to comprehend; it is not about coding skills, it is about being at the right place at the right time and self-marketing.If you suck at those, your game fails even if it is the next big thing, then Activision—Blizzard, Valve, or some similar company living from regurgitating the work of others as their own will remake it as their own and make a gajillion dollars from it.

To my knowledge, Russian is the only Slavic language where it is mandatory for a female name to end in -a in both given and family names.
Plus Kozlovsky is a not uncommon Russian family name. (Although the feminine form should be Kozlovskaya.)

What is suspicious exactly? Beyond the Russian name.
The games themselves do not look like straight-up asset flips, despite being made in Unity. Normally I'd say this many releases in a short time can be fishy, but if you come to Steam with an existing portfolio, that is normal as well. Plus, well, even if you are not flipping them, assets can make a game development fast, especially when they are this simple in their mechanics.

And if making the same cookie-cutter bland games by the truckload would be suspicious, Mellow could start writing an essay on Activision, EA, and especially on UbiSoft. =D

Well, it is Dagestan Technologies. Not like it would be their first contribution to the topic this group is centered around. With their track record, you can probably find out that even the logo was "borrowed" from some place or another as well. :)

While I agree on the notion of being scammed is dreadful and a report is always in place in events like that, it is a bit astounding that all this amount of drama is about less than 2USD. =)

The funny part that many of those curation "reviews" are just a copy-paste of the short store blurb.
But yes, many such "curators" popped up when Steam introduced the curation review system instead of mass keys. Everyone wants a piece of the pie Salz pretty much holds a monopoly on, although this much work for a few keys you may sell for a few cents is just sad. And not like they ever gain any real human followers beyond those thousands of bots.

There is a legitimate reason we keep large publishers around. As much shit they do and as much shit we throw at them, at least they know how to publish a video game. As in, how to handle all the financial, legal, and business aspects in a manner that turns profit.
It is another question that some of them keep a little too much of said profit and pay too little to the developers.

But this studio you write about, it is not the first set of developers with good skills in their chosen field who get into serious issues because they are creators first and tried to handle the business side with no real experience. The makers of Hydrophobia or Wolfe: The Red Hood Diaries spring into my mind as similar cases, where they had lot of potential but they vastly overshot their own financial limits and now ceased to exist as a game studio.

So, if I understand correctly, short version:
VN studio is good at making artistic visual novel video games but they have roughly negative infinite financial and legal aptitude to handle the business side of game production, and after their own fumbling collapsed on top of them, like any real artiste, they have shown the sensitivity of a wallflower and now throw temper tantrums on the internet.