Please show examples of the pro-AI users of db0 trying to spread it to other communities.
That would pretty strongly go against the general "vibe" of the db0 instance, and I'd expect the db0 admin team wouldn't stand behind their users breaking rules of other comms (assuming the other comms have rules against it).
If the other comms don't have rules against it, then you block the user in question. If you feel this strongly about it, make your own comms and instance.
If you check my posting history you'll see I'm active both in this comm and techtakes on awful.systems, both very strongly anti-AI.
I blocked the AI related comms on db0, which took maybe 10 minutes. Beyond that, I would block any users doing what you've described if I encountered them, but I sincerely can't remember encountering more than maybe two users in my two years here who would fit that criteria.
This entire post reeks of bad-faith and purity testing.
I might be, if I had seen any evidence of what you're describing occurring.
I'd imagine that is also the reaction of most people downvoting you. You keep insisting this is happening, but I haven't seen it. Provide some screenshots, anything to elevate this past "impassioned rant" and into the realm of having hard examples to talk about.