What do I think?
One video is far and away professionally produced - obviously, and nothing wrong with that. And your second sentence is, well,
Clearly, the ones doing a conga line are mobile enough, but let's not forget those who are unable to take part are doing it in their own way. And that's what counts to them, not the casual observances of a YT video.
These entertainers are the troops in the trenches Donny often refers to, and wouldn't profess to be top drawer musicians. So give 'em some credit for what they do do, bringing a bit of joy into someone's life.