Even, for the sake of argument, assuming that that is true it doesn't prove the ideological moderation bias you are claiming, it is consistent with HN being one of the few sites which does not actively suppress such content and those who post it for ideological reasons.
Tangentially, this reminds me that HN needs a dedicated meta-forum and a policy of moving meta-commentary that is off-topic out of other threads and into the meta-forum.
