> And don’t get me started on lindy hop vs west coast swing.
I'm puzzled where this comes from, since they're entirely different scenes. On a social dance night, or say, a festival, one may find Blue/Balboa/Lindy Hop (and possibly Shag), but hardly Lindy Hop and West Coast Swing, since the music is different.
Edit: Actually, the message that the article sends is exactly what happens - dancers try other dances, then they share how they've integrated them into their dance, or how interesting is anyway to try something different - as opposed to intellectual condescension.
> Couples splitting up because one is heavily more invested in dancing than the other is a common occurence.
There surely are occurrences of this, but I wouldn't describe the phenomenon as common. It implies that a romantic relationship is based entirely on dancing, which I don't think is frequent; also, the vast majority of the dancers leave the scene within 3/4 years.
I've personally lived the "mismatch of interest", but it ended up like any other separate hobby in the context of a couple.