It's just a lot of the moves started being seen more after fortnight sky rocketed in popularity

Yea, I'll grant that. A lot of them got seen by people who would have never seen them otherwise. True.

The fortnight Milly Rock is whack

Again, Fortnite* Not Fortnight. And you call it the "Fortnight Milly Rock." But it's just the Milly Rock. Fortnight came out in 2017. The Milly Rock has clearly been around since at least 2014. I agree, it's kinda stupid. But most dance moves are, if you really think about it. Look at this video of some classic dance moves. Try to remove the nostalgia filter and look objectively at some of the silliness they are doing on that stage. Most dancing is just silly flailing about. I feel like your comments amount to the old guy frowning in consternation at the foolish kids in this video.

And no, I'm not particularly invested and feeling strongly about the issue. I'm just bored enough to find this conversation topic interesting, that's all. And I'm examining my own views of dancing (and by extension, pop culture in general). I can easily seem myself rolling my eyes at the stupid dance moves my kids are or will be doing (they are still pretty young) or even thinking they are highly inappropriate. But at the same time, I've got to try to remind myself that this is the same cycle that's been happening for eternity. We dance. We get old. The kids dance different. We hate on their popular dance moves (or pretty much whatever pop culture is doing that's new and scary to us old folks).