Avoiding contentious terms is not the same thing as avoiding contentious topics. The blog clearly says he's keen to talk about these things, but tries to do so

Avoiding contentious terms is not the same thing as avoiding contentious topics. The blog clearly says he's keen to talk about these things, but tries to do so in a way that doesn't drag in a bunch of baggage that makes it less likely that the people you're communicating with will listen to your point.