Sorry, I wasn't clear with that speculation. I was meaning more along the lines of how people have changed the term boomer to be - if not outright dismissive - meaning something like "person who has traded the wellbeing of their children for some extra money or comfort, or is likely to do so if given the opportunity now".

The way I see tradcuck used online, it's in a similar vein as that, except where boomers are implicitly too naive to know any better, tradcucks relish their own failures (this stems from the use of "cuck"). This is where I personally become uncomfortable, because a naive man can learn and change, but a person seeking failure is irredeemable.

I can't say I really follow the example of Nick Fuentes, as I have no idea who that is, but you mentioning "mgtow/incel" in the same sentence reminds me that local lad impossible1 is actually where I first noticed the term tradcuck being tossed around.