It'll be fine in the same way Facebook is fine. It'll have users, and it'll maybe even make money. But Facebook is filled with negativity, regurgitated content, aggressive monetisation and an ever-increasing lack of personal connection.
I logged into Facebook for something last week for the first time in a long time. 14 out of the first 20 posts in my feed - so 70% - were "suggestions" or "promotions". It wasn't stuff posted by people I know or pages I've liked, and it wasn't even stuff that people I know or pages I've liked had interacted with. It was adverts and shitty, lowest-common-denominator content that I had no interest in.
Facebook isn't dead but it might as well be as far as I'm concerned. It's no longer enjoyable, interesting or useful to me. And Reddit is going down that same path.