The website seems to implicitly say that white men equals bad and any attempt made by white men to improve the situation must be half-hearted and just a PR stunt. Thus all the sarcasm. This view is not unique to this website (if they are even trying to make this claim in some form) but runs through a lot of these initiatives.
Lately, I have even witnessed people complaining that most donations come from white men charities and that this is bad (with some people even suggesting they should refuse those donations to make a point), which seems completely nonsense.
How far does it have to go for these attempts to raise awareness of a problem to turn into racism themselves?
Because humor is a good mechanism for talking about topics we might not otherwise talk about, but should be.
By "adversarial discourse", do you mean the site or the HN comments?