It’s because their beliefs are more of a virtue signal than an actual belief based on data and reality. When you disagree with them, you are calling them a bad person.
This.
They have no self identity and are terrified of being ostracized by the like-minded group they're among. Without that group, they have nothing.
I used to have lib hobby friends. Covid came around, the libtard ringleader announced we’d all be getting the vaccine to meet again. Not me though….so I was cancelled and left behind in the dust. Funny thing is…I built and maintained all their hobby related infrastructure. Since I left it’s all fallen apart.
👍😁