I'm not really sure. One of the most common complaints among the less extreme portions of the right is that the left is too intolerant and strict and not fun to be around. And being more welcoming of the person themselves, even while acknowledging to yourself that their beliefs are severely flawed (possibly due to factors such as propaganda, peer pressure, religious beliefs), might be a way to help capture that crowd and work to win them over.

At the same time, there needs to be a line drawn somewhere where the person is clearly being malicious and possibly dangerous and is a lost cause. Stuff like "your body my choice", using slurs, praising suicides of marginalized people, etc isn't worth tolerating. Also when it comes to group activities, allowing these sort of people and ideas makes minorities uncomfortable, so when they leave to someplace more comfortable now your group is just full of Nazis. I seen no problem with cutting these sort of people out.