The word has a dictionary definition but, like a lot of -ism words these days, most speakers don’t want to be constrained by them. In other words, the meaning is less important than the feeling evoked as it gets tossed about with little regard to the actual meaning. Like “terrorism” or “racism.” Including for humor around here with the old “dat’s racist!” meme.
Edit: Just further proof that all words are made up.
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