This was the first round where a "smart" AI could've potentially been used for solutions. Aside from a cheater or two, everyone seems to have performed normally. There weren't a trillion C-E solves.
This just goes to show that the AI is just another possibility for cheaters. Other possibilities include telegram servers with thousands of users and masters who livestream A-E on youtube for fun. Even if the AI were 3000-rated, I don't think that it would significantly impact competitive programming as we know it. Keep in mind that competitive programming as we know it does have some cheaters.