I actually agree, I don't think people should merely dismiss differences on issues that strike at core values -- I think it's okay to cut friends/family off on huge differences in values. I have actually done this to both left and right-leaning friends.
But what I'm arguing is that most people do not actually come to these values by way of thinking, but rather by blindly adopting them en masse from their chosen tribe.
And when they choose not to be open to the possibility they might be wrong, then they have a religion, not a intellectually-driven view.
This is okay if acknowledged imo, as per this sentence in the piece:
"If someone is self-aware enough to consciously acknowledge their choice to remain in the bubble, that’s totally fair. I respect it like I’d respect anyone who chooses to participate in a more traditional religion. My issue is when this view is falsely passed off as an intellectually-driven one."
One way people keep themselves in bubbles is by dismissing counter opinions as being tribal or trendy. Some opinions may appear that way because the people that have them seem similar. But it could also be due to them having similar backgrounds that led them to those opinions. For example, most doctors believe in vaccines, but that's not group think, it's based in evidence that they have studied. From the outside, it might seem like group think.
I'm not sure if it's the differences in gait that might cause people with autism to need less arm swinging for balancing or if swinging less causes them to develop those differences in gait.