Why is everyone an "urban planner" all the sudden?

There's been a pretty big movement of YouTube channels, Facebook groups and r/urbanplanning getting popular. Just seems like an oddly specific thing to be blowing up like this. It's one thing to look around in the city you live in and think "I have some ideas". But these randos are treating it like it's a college course and acting like experts.

Something gives me the creeps about this. Just seems like it's obsessed, anti-social wierdos who picked up a hobby of how to most effectively corral people around in an urban environment. I don't like the thought of that.