The thing about trannies is that they will never have a feminine voice, thus will never "pass". They will always sound like gay men whispering.
Even the ones that do, have to force the way they talk every single time, and they can never manipulate with their voice as real women can. Like, trannies could never:
https://youtu.be/mNhxOTRGF8E?t=110There are surgeries, but they only permanently make the voice higher, not feminine.