Yes, but without an epistemological discussion of the matter - a weighty thing to undertake while waiting to pee - how does one distinguish one from the other save by passability. That is not an approach that keeps any of us safe, including cisgender women. Because not all cis women pass all that well. And if we go by looks, or by documentation, then how do new trans women, just starting out, ever go fulltime? It could easily become a catch-22 unless you are one of the lucky few who passes fairly well without HRT. What about those who'll never pass? And if we can't go fulltime without passing well, then how do we show enough time lived as a woman to qualify for documentation changes.
The people who don't want us in bathrooms are only going to be satisfied if we are completely invisible, from the day we first present as women to the day we die. That is not a fair standard - few of us would make it. (Some of them won't be satisfied with that - they really do want us to not exist at all.)
@nothingclever - some use feminism, 2nd wave radical feminism specifically, to justify bigotry against us. Just FYI.