People often report "Your mod crashed my game, the proof, when i disable it, the game runs smoothly", that's not an argument.
It might seem strange but in a healthy community with normal developping tools it would be true, not on Bannerlord.

First many people use my mods and i test it often, if there was a crash happening on each startup be sure i would notice something like that. So it means it's more complicated and you have at least something specific to your game and computer making the crash.

Why do i say it's not comming from UC in 99% of the time even if people points easily at it? Because of Harmony.
Harmony is a tool developped for rimworld and allowing this game to be modded, it uses some exploits to allow changes in an app that wasn't allowing to be modded, here in M&B2 we have an API allowing people to mod it and even if it's a chore on a few aspects, it's here and made for it, so use it.

Why am i complaining about this then? Because Harmony can change anything in the base game and it will most likely work with the mod who made the change but have a chance to break any other mod, and the more mods using this tool, the hight the risk. But the worst part is that with how M&B2 is made it can change other mods content without knowing of their existance and this is the issue.

If you don't use a tool like betterexception and read it carefully (yeah reading the first line isn't enough to know where a crash comes from, thanks to Harmony) you have absolutely no clue what mod can cause the issue, UC doesn't use Harmony because of this reason and so many others, because you have tools allowing to change almost anything on M&B2 without it and without provoking untraceable crashes.

So if you want to report a crash, don't come saying "It's your mod cause when i disable it blabla" seriously i'll just end up banning you, i'm willing to help but people need to be willing. You want to be sure it's UC? Run only UC without any Harmony mod and we'll see, but most people won't try this and can't, because most of the lazy mods using harmony don't care about save compatibility and will crash your game as soon as you disactivate them. Because they don't want to respect their users, they only want to be forced on you (like windows 10 was and now 11) no matter the cost and preferably if it can stop your from using other more respectful mods.