Only on "hackernews" do people expect a username to have any alignments with people's political beliefs. This seems to come up regularly here, and never on any

Only on "hackernews" do people expect a username to have any alignments with people's political beliefs. This seems to come up regularly here, and never on any other forum or irc channel I've used this ID. If I was a communist, why would I self identify as a "commie"?? And not even consistently: Are you a lawn mower? A landscaper even?