Hold on to your crown jewels, members of Parliament: Caitlyn Jenner will address the House of Commons on Wednesday.

The talk is part of a series of lectures on the importance of diversity; other speeches have come from the British actors Riz Ahmed and Idris Elba. Ms. Jenner, the former Olympic athlete and reality show star, will be speaking in Westminster about the issue of gender identity and the heavy burdens carried by trans people worldwide.

You could reasonably ask whether Caitlyn Jenner is the right person to address Parliament on this issue, and many advocates are doing just that; she was, after all, an early enthusiast of Donald Trump, the biggest disaster for trans people in decades. But that’s not what unsettled me when I first learned of her speech.

What gave me the willies was the news that she’d also be participating in Tuesday night’s “Genderquake: The Debate,” which ran on Britain’s Channel 4, the sponsor of the diversity lecture at Westminster. On that show, she debated the legitimacy of transgender experience with, among others, the feminist icon Germaine Greer — a woman who over the years has said no small number of heartless things about trans people, including, “I’ve asked my doctor to give me long ears and liver spots and I’m going to wear a brown coat, but that won’t turn me into a cocker spaniel.”