I also think the passing worries are way overblown.
Because there is indeed a zone between simple "passing as female" and the "passing completely as a cis woman, nobody would believe that you're trans" which Alaina is talking about. There's a critical line where, even if lots of people suspect that you're trans, nobody is going to gender you male, and nobody is going to really care, because your overall femaleness is so obvious. Basically a point at which 90% or more of people aren't even going to give you a second look, and just accept you as a woman. And from my experience, LOTS of trans-women make it at least that far.
I'm kind of at an interesting phase myself, where I can still see TONS of glaringly-obvious male features on myself, and every trans person I've asked about my appearance has said "yeah, you do pass as female, but you still look trans, and you're probably not going to be able to interview for jobs without that trans status being obvious." And for God's sake, I'm 6'2" tall, large-built, have disproportionately-small boobs, wide shoulders, and very little butt. And yet I haven't been gendered male for two months straight, not a single person gives me so much as a second look when using the women's room, and I'm consistently getting stories worthy of the "you know you pass when" topic, where people can't even put two and two together after seeing that I'm in their database under a male name. Again, no, I know I don't pass as cis. Everyone I've asked has told me so. But apparently nobody cares, and my life is basically able to go on completely 100% normal, with my gender identity never being an issue with anyone. So with that in mind, does it really matter? I really think there's a critical line that many cross where being more able to pass as cis really wouldn't lead to any significant improvement in their well-being, quality of life, or ability to just live as themselves without running into any problems.