I don't know about you all but in my niche, forums have never been only about answering questions. The most valuable thing a forum does is facilitate the creation of a community where people feel they belong and where human interaction happens, in spite of great distances in between. AI will never match this personal connection.
Also, my niche has very nuanced answers that require as much "art" and "hands-on experience" as it does just general knowledge. You know, many ways to skin a cat thing. It is unlikely that AI will provide that any time soon.
Based on the above, I am thinking about AI as a big positive for me and my forum.
That said, if I had a Facebook Group that was mostly just superficial question/answer based, I would definitely be worried with AI and Google changes.
The issue, IMHO, with companies like the one we are discussing, is that they remove the personal touch/community from the forum. This will expose them to AI challenges. Again, IMO.