I also don’t live in the United States; do you think trans people only exist in the US? Transfemicide is an even bigger issue in the global south; for instance, Brazil, a global south country, is notorious for its high transfemicide rates, and has a strong transfeminist movement as a result. There will be trans people in all countries who face transphobia, and the countries lacking a particularly noticeable trans liberation movement will be because transphobia is so bad there that trans people feel the risk of speaking out is too great.
I do suggest that you put some effort into educating yourself and engaging with trans and LGBTQ+ struggles where you are, which will not just be “online”. I don’t know where you live, but at worst it will just be the case that the trans people where you are, are not inclined to become political militants because of both transphobia in general meaning they put an even bigger target on their heads, and transphobia on the left that is common across the world meaning that trans people feel unwelcome in organising spaces. This is not related to the original topic of donations, I mean this just for the sake of your politics. If you really can’t find any kind of organised political activity around trans issues where you are, you could at least read transfeminist texts, and tbh feminist texts in general, since feminist theory (including Marxist feminist theory) has discussed the issue of gender, gender essentialism, and transphobia for decades now. For instance, in relation to your screenshotted dm above, it has been a feminist demand for decades (rescinded upon only because some feminists decided to jump on the anti-trans bandwagon) to desegregate sports, and I think anyone who knows anything about women’s sports knows all the ways in which the gendered segregation of sports harms women athletes’ careers.
I’m not sure about markdown but plenty of IDEs can fold eg a method or a class. Off the top of my head I know Geany, Jetbrains, probably most gui text editors/IDEs do. Not sure about markdown specifically, I only use vim for markdown which I know can fold.