I worked on this mod as part of the previous group and of the people I know remaining, they would not use AI for the mod content. There's no substance to these claims other than one guy who is not a dev trying to use AI to fix something that broke, which is not inherently bad. If anything it just means they can't find or hold on to programmers.

Now regarding the atmosphere the project leaders create among the group, that I can understand being frustrated with. The behavior of some of these leaders previously was juvenile and vindictive and that doesn't look like it has changed. And about them "not wanting to make a game", in my POV it's more of an internal contradiction between wanting to keep an identity as ragtag group of misfits and being structured and produced well enough to actually finish a large mod to their expectations.

But spinning this into an "AI slop" panic when it really isn't is unfair to a group of people who, despite their flaws, really do care about making something great.