100% unaffected? It makes their data worth a lot less for AI training. Even if they keep comment history, these are edits - how do you determine which edit to use? Using all of them poisons the data, and picking one risks doing the same.

On top of that, reddit has quickly become a non-source for opinions... I used to append "reddit" to any search where I wanted candid feedback, but absolutely would never do that these days. That's less traffic, which is less ad money, which comprises the vast majority of their revenue. Reputation is virtually the only thing that matters for search, and Reddit's reputation has been sliding for years.