Dancing vs. Dancing

TIL, "EDM" = "Electronic dance music"

This is not in accord with my understanding of dancing.

I have nearly only done "type 2" dancing - mostly pair dancing, and some Scottish country dancing, but also a bit of rueda, modern dance, flamenco, etc.

In type 1 music, if each person "invents moves to decorate that framework" then how does that result in "a crowd all jumping together"?

My experience with type 2 dancing is that we dancers also '[invent] moves to decorate that framework'. I can easily think of the times where I invented new things in both salsa and tango. (Note: I mean 'invented' in the personal sense - doing things that I didn't learn from others. I believe this is what the author meant.)

There is a strong bias error in the use of images to make the argument. Most of the dancing I do involves large groups of dancing pairs. For examples, https://duckduckgo.com/?q=%22salsa+club%22&t=ffsb&iar=images... and https://www.google.com/search?q=crowded+tango+floor&source=l... and https://duckduckgo.com/?q=latin+club+dancing&t=ffsb&iar=imag... .

While crowded dance floors are my experience, most of the pictures for salsa and tango are of only small number of people dancing, because those shots are more photogenic.

BTW, dancing does not require music. A YouTube search for "dance without music" found https://www.youtube.com/watch?v=IbpRwgd4Hqc with almost that exact title, for example. Making this type 3?