What patches show, is how bad the code of the game is. If you fix 10 bugs and get 10 bugs in return - that’s a very bad outcome, because it might mean that you code in a such a bad shape, that it’s unfixable - no matter how many bugs you fix, u will get about the same amount in return.
I don’t think VT2 is in such a bad shape, though. They can still deal with bugs one by one imho. But I think the code is so bad now, that it is easier and cheaper to rewrite it from scratch, than supporting and fixing it. Because: a) at this rate the bugs will be fixed in the next year at best. b) as soon as something gets added or changed, everything will fall apart yet again, making all effort to to waste.
Though this evaluation comes from the assumption, that the whole studio works on fixing bugs now, because there have been no significant changes or content addition. But maybe 90% is secretly working on a new DLC or something, however then I have to question FS decision making.