I think you guys are misinterpreting what I meant by "liberal purity test". Lately it seems there's a checklist of opinions on the left, and you must agree with "our team" on every single point. Especially on covid. You can have a tiny bit of nuance here and there but must still agree enough to get that check mark! Otherwise, you're suddenly a right-wing nutjob. Maher is obviously a political person aligned with the left on most issues, even Rogan isn't a "right-winger". There are several other examples of people getting called this for one comment or opinion that goes against the mainstream.
The right does this too of course, has for a long time and it's one of the reasons we mock them so much because it's complete and utter bullshit. Never about what you actually believe, but about being a good member of "the team" and it comes down to each side shouting a list of talking points at each other.
It's stupid, and it's dangerous.