Musk has gotten several. The elonjet Twitter shit got days of 500+ comment posts, and that's just the most recent example I can think of. Twitter didn't die, I doubt reddit will.
Hey give it time in the case of Twitter. Last I checked they have a distinct strong lack of profitability, which tanked further the second Musk started spooking advertisers. Obviously he can afford to personally bankroll it, though, but it seems like a bad ROI.
Twitter is very much dying. It just doesn't happen overnight.