So, AI spam can degrade quality.

But ... isn't this with regards to Wikipedia a much more general problem?

Usually revisions are approved manually by real people. This already can be negative; takes a lot of time; no guarantee that new information is true but old information can be wrong too. To me it seems more as if the problem has much more to do with the quality control problems of wikipedia itself. Yes, AI spam fatigues here but if the quality control steps are bad then AI spam will only make this worse. But AI spam going away, does not mean the quality control steps have gotten any better. These two issues should be separate. Wikipedia needs to find better quality control mechanisms in general. And that also includes existing articles - some are written by people who are experts in the field. But they don't really explain anything at all. So, these articles appear good but are virtually useless for 98% of the people. I am not saying one should dumb down wikipedia, but you need to kind of focus primarily on the average person really - not stupid but not a godlike expert either. Explain it to, say, someone at age 18 or perhaps even a bit less than that.