As corollary of AssumeGoodFaith this assumption lessens the burden of DefendAgainstPassion.
Newcomers in a community are exposed to certain CommunityExpectations such as willingness to friendly and constructively interacting with peers, sensing and giving feedback, primarily in actions of social symmetry.
A Case Study at [WikiCreole] showcases this paradigm:
''"I'm not "giving up" and I definitely didn't want to force you to give up. I'm just not going to argue blindly for my idea of how Creole should look like -- I realized I was doing this for the last several months, basically repeating the same arguments over and over. This is sudden because it comes out of a sudden realization, not because it's an act of emotional terrorism".''
So AssumeNotDogmatism might contribute to a more friendly and constructive atmosphere.