Yeah this post is bullshit. I grew up with cars (I'm in my 30s). I did all those things that kids apparently sacrificed for cars.
Know why kids can't/don't do any of those things anymore? Parents helicoptering over them. Parents freak out when they get worried about their kids, where as me growing up in the 90s and early 2000s I would leave in the morning and not come back until dinner. I'd go to the beach, play with friends, wander around town and just hang out.
It's not cars that ruined all these things for kids, it's over protective parents who feel better parking their kid on the couch with a tablet than let them go outside and explore, play street hockey, football in the park, or otherwise be a fucking kid.