The very same people who would be flagging that comment wouldn't bat an eye at saying they won't read or support anything by folks like…

First off, you might be right for some small number of cases, but I’d flag any and all rants such as this, regardless of the target. Off-topic, and doesn’t contribute to the conversation.

Second, for those as you describe, when they go off on an off-topic rant about DHH, someone else will conveniently flag it.

There is not a single discussion on this board about DHH that doesn't get overrun with posts about what people think about the guy, regardless of the posts' topic.