Live albums get a pass, of course. And yes, lefty drummers exist. If a lefty drummer wants their kit panned the way they hear it, that is of course fine.
In all seriousness this topic falls squarely into the square of "strong opinion, weakly held" as far as I'm concerned - nobody except people like us actually cares. That being said I've yet to hear a cogent argument for the contrary position... I make music for the audience, not for musicians.