I think you got downvoted for saying that full-disclosure is irresponsible.

Many people I've talked are in favor of full-disclosure and think that coordinated disclosure is long term dangerous as large companies with the resources to actually develop secure software are not sufficiently incentivized to do so under coordinated disclosure.

Edit: I've also noticed on HN that sometimes I will get downvoted really hard for no clear reason and then two weeks later HN will magically transform my downvotes into upvotes. Not really sure why that happens, maybe a wave of bot banning?