What part is contradictory? Those moderators will be replaced by a similar number, ie less than 10, that can moderate the top 100 or so subs. My comment was on the scale of moderation required, at least for subs on /r/all which is what the vast majority of users use, not whether those exact moderators will still stick around. And you never know, mods might say they're going to quit but many mods might still stay. I don't expect to see power mods like GallowBoob going anywhere.

I see what you meant now. Fair enough.

The other part of my prediction is that some of the (real, non-bot) engagement that the giant generic subreddits get are from users that are anchored to Reddit by more specialized subreddits, like those for specific games, hobbies, that sort of thing. If those special interest subreddits die out, I think the large generic subreddits will become more hollowed out than they are already, and not worth much.

They're already not worth much, that's why I never go on /r/all in the first place.