I think in my past, whenever I've been in a leadership position over a group of people, we've all been there to achieve some goal. We were all cooperating to reach the same end -- and those with a different opinion of that "end" were excluded.
I have also been on the opposite side of this: I've been a member of groups whose goals I did not agree with. And no amount of civility or communication would bridge that chasm; therefore my opinions and thoughts were excluded (and I voluntarily left).
There is no right or wrong here -- if I step back and stop injecting my own feelings into the conversation: there are just differences.
I don't like theories. I don't like abstract things that try to become a source of truth, while completely ignoring and marginalizing the very real human element involved. I have no respect for them.
In my view, "don't be an asshole" is basically: you join a group of people, do not carelessly or intentionally go against the norms of that group. Do not insert yourself into a group of people that you know you will not get along with. There is no right or wrong, but there is conflict and no conflict.
But even now, as much as I have tried to take a step back with an objective lens, and disassociate from my very real thoughts, feelings, and beliefs: what is the point? I hold all of these because they are integral to who I am. As do the people of the Rust community.
Disjointed thoughts, without a goal to neatly encapsulate them all. Or perhaps my goal was to share my human experience with others? To socialize and create bonds with others? Quite a silly thing to do on the internet.