Why is it PC, to a have a lead character with two hearts, from an alien planet, that changes appearance completely every single time to change gender?
It could be argued that the likes of Voyager were just spin offs to tick the PC brigade boxes without upsetting the hardcore fans.
I personally don't give a toss who does it, so long as it's entertaining. But then again, I've never been one for worrying about who stars in what.
I couldn't name 99% of actors in films, as I think it's pretty unimportant in the grand scheme of things.