I think the ease of creating vote-selling services undermined all other innovation. When every other idea is lower ROI than a simple, easy bot it disincentivizes other ideas.

Yes and no. It definitely did have an impact, but I see that as an underlying short-term vs. long-term vision problem. I think the investors with long-term vision were spooked by other factors, which left the ones with short-term vision free to destroy so much value (including their own).

I agree with this, but doubt it will happen.

Yeah, maybe... History would suggest that you're right, but hope springs eternal ;-).

AIs that are or aspire to be agentic can be as welcome on the chain as human users, and simplistic, predictable bots can be frowned on.

That's where the netiquette guidelines come into play. It can't just be a free for all, but I'm convinced that AI can contribute in many ways that could create value and enhance the human experience.