In my interpretation of the issue, the AI situation isn't really the most important situation one can look at when analyzing the backlash it has gotten in the preceding years. If any chapter of its life was, that prize would go to the upgrade to Eclipse. The whole AI thing comes off as exaggerated... at least after realizing it's an inevitable two-sided dilemma wrought on every website that only affects one of the three art mediums (digital art, the other two being traditional art and photography). It's a lobbyist versus lobbyist fight not unlike the one that occurred when the printing press was invented. If people don't resort to slander, DeviantArt will be fine.
I left DeviantArt on the first of July, once half of 2022 was over, and the very first website I began using full-time was Reddit. I would use that as a sort of hub to bring attention to other websites I'm on, but I would later realize how good it is for art, so good that the only reason I use other websites is because I was so plentiful with it. The DeviantArt subreddit itself, technically, could count as a candidate to take DeviantArt's spot. The Inkblot subreddit, r/InkblotArt, at only a few weeks old, was seen as a challenge by Jay, the founder of Inkblot (although his reputation doesn't help him as replies at https://www.newgrounds.com/bbs/topic/1516990 show). On the one hand, one response is to say "don't underestimate the power of a website to hand on", though on the other hand, equally, one might say "don't underestimate the power of others to take the lead".
In any case, I give my best wishes to Side7. If Side7 is trying to get by economically, one word of advice I'd give it is to not fall into the cliche merch mindset. A lot of websites... DeviantArt, Buzzly, Inkblot, etc... think "we need money, time to roll out the t-shirts and coffee mugs". Don't do this. In the grand scheme of things, clothing, coffee mugs, and so on with your name printed on them is not going to help. Do you realize how many companies and websites do this? Have you ever heard anyone say "I got suggested to this website by the shirt of someone I saw in Wegman's"? Anyone? Ever? Maybe once in a very, very great while. It's not that it's not worth a try (and I've made it a habit to "collect" website shirts), but that it's worth anticipating failure if Side7 does that. Crowdfunding (Patreon, GoFundMe, etc.) isn't spectacular but it's "better". Ads work well, although nobody wants them for some reason. A strong suggestion I'd have is maybe Side7 could have premium contests, with the winner getting a good (real) prize. People absolutely LOVED those on DeviantArt, and yet there was always room for even more creativity on what the contests could be about.