I'll touch on the running aspect, but the more serious concern of isolation, drifting apart from parents, losing opportunities is much more important to address. My advice here is never deceive anyone about who are at any moment (it changes). And importantly "anyone" includes yourself. With relationships of any type things like "interests" and "views" don't really matter, it's solely about having the same "spirit/soul" as those around you. The more materialist things can sometimes be a good sign of this, but it should really be a feeling more than anything.
The modern running "culture" is largely trash across its spectrum. My thought is it all comes from people taking on the 'identity' of a runner. Ever notice how people say "I'm a runner" or "MY running is going well". These sentences should not comfort your cochlea. We all run here, and we all take/have-taken running somewhat seriously, but we should still be able to do this while "getting out there and getting some air". The sort of attitude the "MY running" types have - which is easier to feel than to explicate - make running into just another one of these cultures that can be sold to and molded by forces larger than itself.
A LR post that really hit me a few years back essentially asked "where have all the free spirits gone?". Again - why can't people just run for themselves and their running-buddies? Running is so over-marketed at every single level. How many podcasts, profiles, videos, and articles come out every day? And a 30 minute 5ker or a 30 minute 10ker can find "what they want" at any time. Running faster or slower will not make us any free-er. Running on trails or roads makes no difference, the trail running community has just succeeded at making itself appear as a free-spirited bunch. I think this transition is somewhat concomitant with the increased abundance of "student council" types on cross country teams, but I'd guess that is just a symptom not a cause.
What I'm trying to say is more than just "capitalism and social media ruined running". The idea of "being a runner" is (largely) responsible for these things. Capitalism and social media are two of many things that can latch onto "running identity" and use it to their own ends, further hastening it's decline into just another subculture, if it isn't already. Unfortunately these things do 'help' some aspects of running (visibility for clubs, affordable shoes, more competition).
Bra-Ket had 2 great posts, read those too!