I'm fairly certain this either just a joke egged on by the fact that there were suspicious comments right before the shutdown, or it's the more typical variety

I'm fairly certain this either just a joke egged on by the fact that there were suspicious comments right before the shutdown, or it's the more typical variety of ChatGPT spam account, where you grow an account with low-quality activity and then sell the account to whatever cryptocurrency or porn spammer bids the highest. Reddit themselves actually using ChatGPT to fake activity would be too preposterous to be real.