Most of that traffic is probably lurkers and content consumers. Reddit will continue chugging along for a bit, but the loss of power users and mods is about guaranteed to wither the platform over time.
There are enough reposts to keep them busy for a while I think. I swear the same post would get reposted a few weeks after the original and get just as many or more upvotes than the first time. And the top comments were usually the same or similar.
That’s the bots at work though. Create a circle-jerk of upvotes on certain topics with nothing inventive or new in between. I have yet to see a bot(like response) here. Most comments are well thought out. And the posts are pretty relevant and no ads!!!
I swear 50% of askreddit questions were bots recycling questions. You could pump it up to 100% and I doubt most lurkers would notice the difference.
Same deal with subs about cute things or videos of crazy stuff. Reddit has enough of a backlog that casual consumers probably wouldn’t even notice a slow rotation of it. I’ve seen many times somebody point out reposts and get slammed with “Well it’s new to me!” comments.
The only thing that might noticably suffer are meme subs since memes have to follow current topics, but honestly how hard can it be to make a bot that creates current event memes based on templates? The templates themselves are already run into the ground.