Fantastic piece as always, M.
I will say, at least in my experience there is a difference between hotwife and cuckold.
Hotwife is 'permissable', whereas cuckold is more consensual non-consent. For example, most men interested in hotwife aren't of the mindset that they're unable to please their wives, more like they enjoy watching their wife (or hearing about) being pleased by others.
Whereas cuckold is more, you can't please me properly, so I'm going to 'force' you to watch a more virile man do it.
There's not a lot of difference, but enough that purveyors of each definitely care about the distinction.