So why do I see people on twitter and instagram making this argument.

Uh, because they think they can use such arguments to (continue to) get their way culturally.

People can argue anything they want. And it might seem to have merit if you see that argument over and over, but it doesn't mean it's not bullshit fed from their handlers and thought leaders.

"How come I hear leftists say that conservatives are bad and wrong?" Uh, because they need to paint them that way to move things in the directions they want.