@GossiTheDog @jerry
As someone who's had accounts on and off for about 7 years, I think that may be confirmation bias
What I noticed instead is that in the early days when you followed someone they mostly followed you back. You posted a funny comment people followed. In no time you were part of a little online community and It was pretty easy to have a decent social experience (if you liked linux and pictures of cats, at any rate)
Now everyone seems to have settled down. Nobody follows you back if you follow them. Nobody chats to strangers. My last couple of accounts I came, posted some links, nothing happened, I got bored, I deleted the account. I am not sure what accounts you saw, but they might have been legit accounts who went through the same experience