It's a fair question considering that's been a de facto rule on social media, despite people using code words to get around that.

But I am not sure that was ever the case here on HN, so I don't know why they used the word "still".

to put a stick in the eye of the person eager to jump up with copypasta about how we should be focusing on vaccines instead of other treatments, the response about how all the "treatments" offered so far are scams, the political follow ons, and so on.