If parkrun took a stand they would be attacked by the trans activists and I do think that plenty of trans people would self identify as their preferred sex anyway despite the language and expectations.
Agree, which is why i think parkrun (as a brand) needs to have a think about what it is, ignore completely any talk of gender and trans participants and categories, and just sidestep it completely. Because people do genuinely love it, and it would be a shame if it all became too much.
Totally agree about volunteers not checking people - that's not in the spirit at all. I'm not in a place that has parkrun so i don't know too much about it. Is it an actual company with profits etc, or is it more of a charity thing? or how does it work? (are there fees?)