True but in many ways the 'definite bias favoring Apple on Hacker News' does actually validate the concept of a cluster of people that could usefully be described by a distinct term. If 'fanboys' is considered an offensive slur (as it appears to be) then I'm personally happy to use the term 'Apple fans' but they are essentially referring to the phenomena/grouping.
Personally I'm less interested in karma than contributing to the insight-fullness and accuracy of the discussion. I'll gladly wear my -20 comments as a badge of pride as long as they do this.