I became a teacher last year and the amount of incredible, complex, highly coordinated dancing they pretty much all do is incredible. I saw a 5 year old do a whacky fortnite squat dance into a back handspring. What?!
At least I could teach them the Macarena so I had something to offer because goddamn.
If you're being obnoxious and dancing somewhere like in an airport in a way that disturbs or obstructs other people then you're an asshole for disturbing and obstructing people, not for dancing.
If you're just doing some goofy little micro-dance in public or you've got some complex routine and you're doing it with a group of people outside somewhere that is appropriate then more power to you.
The people who are intentionally jerks about this are shitty people. Let people use public spaces how they want, within reason. You don't have to enjoy it. You don't have to appreciate it. You don't have to be a part of it. But you can't honestly tell me to my face that there is already too much joy in the world so on ya bike - go make yourself or someone else happy but leave people be so they can enjoy themselves.
Oh I just meant like a high school kid who shows off in front of his peers at school or something. Not taking up public spaces and being jerks about it.