Because leftists cannot be reasoned with. They have steeped in their idiocy and will never let it go.
I like traditional liberals more so because their activism or better put "focus" was about social betterment without assaulting free will...
...the same goes for original feminists and civil rights leaders like MLK...
...good people who wanted the world to do better...but it was by education and not by force, and the issues weren't dicey like man made climate change and the lot...
...modern day liberals aren't very liberal.
They more closely align with mentally ill fascists in their views and their activism...