Type in any steamcommunity URL and add "?l=english" to the end of the link. It should fix it.

Yes, and I'd wager many people wouldn't mind the practice of "ONLY BUYING QUICKSELLS" being banned on the site.

That is considered relisting, the point to scrapbanking is not asking for specific weapons so multiple different wishlists is redundant. And the second trade could be considered it as well if they all serve the same function and could be cleared up by making a "also selling" list in the notes. To have multiple trades for just weapons, they typically have to serve different purposes or have wildly different values (one trade for selling cheap droppable weapons and another for genuine/strange/obscure glitch weapons).