But hasn't this always been the case? What is personality if not a weighted summation of the content they consume? Before the feeds and the algorithm it was books and gossips.
I'm pretty sure GP was being sarcastic. These things are very obviously not the same. You give one example, but another is algorithmic engagement - this has been most extensively studied in kids and teens but it affects everyone.
I made this point elsewhere in thread, but another difference is the daily content aspect of online influencers. Instead of reading one or two shallow, vapid articles a month about "what's wrong with your relationship" they are seeing new content every day, and they are mostly seeing the content that is upsetting the most people.