Hey @ThatOpalTurtle fellow TW here 👋
A lot of what you posted resonates with my experience but I think we've handled it in different ways.
I too feel that my life has been vastly improved by my medical and social transition and really do not regret it, but despite what well meaning friends and family say, I also recognise that I'm not female. The transition certainly did something; my body is no longer that of a typical man, but I am still a kind of male.
I view that transition is a treatment for a mental health issue I have, but like any treatment there are side effects. For us, the social consequences of transition are the trade-off. I would feel very uncomfortable in a male public toilet, so I avoid them. However, I know as you seem to in your post that we are male and morally should not go in female toilets even if people tell us we pass. So personally since transition I've used neutral spaces. That's incredibly inconvenient, where I live there are not many, so I have to plan around the ones that there are. This is the unfortunate side effect of transition, but worth it in my view.
I'm not, as you mentioned you are, waiting for any court case: I know it's wrong so I don't do it. We can choose our actions, we don't need to do what other TWs may do. We are not automatically on the 'good' TRA 'side' fighting the 'evil GCs' who are automatically wrong and bad. We each are individuals with agency and we share our society with others who have thoughts and feelings too.