Actually, I was being over generous about DWTS. I don't know the US dance scene, and the participating professionals are not known to me. In that context, having watched all but the final (ironically) of the series that was screened here last Autumn, I actually couldn't tell, half the time, which of each couple was the pro and which the celeb.
Here is the UK, in the later programmes, the same was true to an extent, but only because the best celebrities had achieved a marvellous standard, and could really be mistaken for professionals. Two, at least, of last year's finalists could easily earn a living as professional dancers (but not, of course as teachers).
I do stand by by my view that the achievement of ANY of the celebrities did them credit; and the view that most social dancers could NEVER attain that standard, no matter how many lessons they took.
It's first class entertainment: either way.