I can't say what percentage of Reddit users cared, but I can definitely say that the majority of Reddit participants—the people actually posting the content Reddit is trying to sell—have left. Reddit activity has dropped off a cliff: https://subredditstats.com/r/askreddit
But if I actually visit the subreddit, I see many posts from within the last 24 hours with 300+ comments each. Is it possible subredditstats.com had some kind of regression in its counting around that time? It could be related to the API changes.
That would make a lot of sense, I wonder if there's a good way to identify activity. Perhaps looking at the # of subscribers/active users that Reddit reports (but I'm not sure if historical data for this is kept).
Wow, I figured from hearsay that it was unchanged. Thanks for letting me know. I admit to being wrong about most people not caring, at least judging from the numbers you gave.