I think social media in general has been, on aggregate, not a good thing for us. It does change human behavior and in ways I think are often for the worse. Of which I am not trying to claim holier than thou, it has absolutely gotten a hold of me and I have tried to really scale back my usage of it because I didn't like what I noticed in my behavior on it, and what being on social media can do to my mood.
So I can agree with the OP.
I say on aggregate because it does of course have upsides, for example I have I have seen 8 people now like a coaster page, through me and I did nothing at all. They see me comment, check the video and see thats cool, then follow the page and yeah they're GP/casual but maybe they learn some stuff, follow some coaster news, think to go to a local park.
But probably not, they just clicked the like once and will never see the page again most likely lol
I cant say Ive been an enthusiast long enough to say Ive seen a change, since I started in 2012 I dont know how things used to be, but yeah social media changes us. It encourages "look at me!" clickbait/going for the click, speed over substance, constant comparison. So I can see how all that could've have changed how enthusiasts behave. Really all social media does is allow the urges/excesses we have to be expressed, when normally we'd keep some lid on it. I mean I keep and share coaster counts, rankings, am about to post pics of a trip on FB. Why? Why cant I just be happy with my memories and good times? I guess because I have the ability to indulge.