You can say some pretty horrendous things on here as long as you couch them in mealy-mouthed modest-proposal language, while there's almost no recourse for having a good faith rebuttable flagged or down-voted.
In theory, the site moderators are supposed to be a check valve on this kind of abuse, but it's quite sobering to look at the age of some of the accounts who behave badly on HN and yet have somehow passed notice.
I can only assume that the moderators are okay with the company they allow on the site, and I think it's worth taking a look around and asking yourself "Is this place _really_ worth contributing to?"