I can not like something without wanting to make it illegal to do it. Simple as that. My preferences aren't necessarily someone else's preferences.
Lemme example. In the weed space, I don't think anybody would take this seriously: "well it's illegal and there's nothing we can do about that so it's pointless to discuss dissenting views." Or "it's going to be legalized and there's nothing anybody can do about that, so there is no possibility of debate." People would just laugh at that.
But when it's normal consumer activity, those same arguments seem to cut ice. Why?