By all means, drink mullein tea in reasonable (not excessive) quantities. I doubt it's effective against covid. Do get a vaccine as well.
As for that daft bunch in Ohio: do they want to "believe God" to keep them safe? I think they'd recommend a vaccine course. And I'm certain the head honchos would get vaccinated.
But either way: I just don't care what they say, think or do. Their opinion on anything is completely irrelevant to me.