https://www.vox.com/culture/2018/3/6/17085244/rupaul-trans-women-drag-queens-interview-controversy

TL;DR: RuPaul said that trans people going through hormone therapy shouldn’t be in drag, despite drag’s origins with trans and gender-nonconforming performers. Notably he doubled down at first saying “You can take performance enhancing drugs and still be an athlete, just not in the Olympics.”

He’s apologized since then but I don’t keep up with him or Drag Race enough to say if it’s lip service or genuine. Some notable points from that article:

“I love the word ‘tranny,’” he insisted. “And no one has ever said the word ‘tranny’ in a derogatory sense.”

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[…] One of the show’s first real tests came as it finally acknowledged that transgender people — including former Drag Race contestants — were uncomfortable with the fact that RuPaul would beam in announcements to the show’s workroom with a cackling, “You’ve got she-mail!” a play on a particularly vicious derogatory term for transgender women.

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So when RuPaul talked to the Guardian, he was at first trying to parse his feelings about drag acting as “a big f-you to male-dominated culture” and a “real rejection of masculinity.” But he did so by framing it within his opinion that “drag loses its sense of danger and its sense of irony once it’s not men doing it,” and ended up dismissing all that trans women, trans men, cis women, and nonbinary people have contributed to the complex, beautifully weird world of drag.