I noticed this before I left Reddit last summer. Except for a few smaller niche subreddits that had decent discussions, everything else seemed like bots. I also noticed a lot of my comments and replies were deleted for no apparent reason so I quit participating. I do miss Reddit from the time period mentioned but nothing stays the same and it's time to move on.
I think the bot uptick is a direct result of the mod strike and API changes. A lot of mods left, and a lot of the auto-mod tools they were using from third-party developers got nuked, so there are less people moderating with worse tools.
Small niche subs are the only reason I'm still using reddit. Not the main subs, again bots are the problem, but small niches are unfortunately slow to migrate to an entirely new platform because it's not guaranteed that the community comes with it (unlike large generic subs like memes, which has a very general audience)