Cis yes, and I'm not sure about the rest. But saying they get mistaken for trans wasn't meant to imply they're mostly lesbian either. (Although I did stumble into a TERFy lesbian discussion on Reddit once back in the day and that's probably where I heard the part about more when looking butch.)

As a cis het nonterfy feminist old woman who sometimes wears dresses but never makeup, and a buzzcut, I don't care when someone mistakes my gender or sexuality. But that's probably because I yeeted a lot of my fucks along with my uterus many years ago.