I’ve really enjoyed this radio4 series about internet culture and the impact that messaging apps have had on our lives/politics.
Each episode is a half hour with different themes: WhatsApp groups, Politicians using WhatsApp, Slack, Chatbots/AI, Discord leakers, Telegram in Russia.
Probably would say the first half is more UK-specific but the show does a good job of making the later episodes relevant, thought provoking.
As I say, it’s a complex issue. Different people transition at different ages, with affects on development. Some may have taken puberty blockers at a young age, others may have transitioned later in life having gone through puberty, with accompanying musculature.
People are a diverse bunch, it wouldn’t surprise me if some trans women may have less testosterone than some cisgender women. You’re saying that “science shows they [all?] actually have less testosterone than some of the cis women they’re competing against” - I’d be interested in seeing the studies you are thinking of.