It's actually true that social media as it was in the 2010s (when the Instagram and WA acq's happened) is basically over.
They're no longer social, they're mostly just media: apps designed to be portals into consuming as much content as possible, by whomever (so you watch more ads).
I'm not saying Meta is a great company or Zuck is a great person, but the idea that Instagram & Facebook compete with TikTok and YouTube is 100% true.