Because I’ve talked to people who say things like that and it just makes me lose my faith in humanity a little 
But I have to remind myself that this tagline is some western Marxist (or maybe socdem?) verbal diarrhea and isn’t common among the people who matter
I think it's nice to see a take like this that you can't engage with, it's like exposure therapy. The big problem with Internet arguments is that the other person is right there being wrong and you can type at them until your fingers fall off while they continue to get more and more wrong.