I think it's the very definition of dumb. Usually, it goes like this.
1. Make a comment condemning/demeaning a certain group of people that meet criteria x,y,z.
2. People who self process to meet part of the criteria, but not all, get upset as if you're talking about them when you clearly aren't.
3. Rinse/Repeat.
Example: "White, middle aged men, totally lacking in self awareness, who harass and demean homosexuals are the drecks of the earth IMO"
That comment, especially around here, will almost ALWAYS be met with "This is an example of bigotry towards white males in this country" or some other nonsensical generalization and then the martyrdom begins. It's a specific group performing specific actions under specific conditions. However, if read that way, there is no real argument to be made or way to push back so the statement is ignored as a whole and they look at "white male" and begin their shtick. Yeah, I find that incredibly dumb and even more disingenuous.