Your flailing a bit here. It's not making light of sickness or actually implying that someone is sick. It's common that conservatives call anyone that thinks we should accept gays or trans people and treat them like anyone else degenerates or sickos. The same with legalizing drugs etc.
This is taking the piss on the accusation. Showing who the actually sick people are. The ones that find joy or safety in the persecution and exploitation of the vulnerable. Whom the war on drugs and many other societal norms focus on.