Especially something about the timing around :30 on the video. Not a fan of the kind of fist-pump arm style thing right before that at :27, either. The rest didn't look WCS/disco-y but that little segment did.
The trousers aren't bothering me! I'm less a fan of floppy/bell sleeves.
Authentic??.. Its lacking in " sabor " and is extrememly " Jerky "... one has to be very careful when attributing the word " authentic " to a specific performance.. its your interpretation, but it cannot be used as a yardstick.
I believe the OP's comment to be more rhetorical than descriptive. Also, being that it was posted several months ago, it seems a wee odd for a new member (2e post) to choose that particular post to reply to.