@SpookySeason77
Would it be disrespectful in your view for a trans woman with F on her ID to use women's bathroom?
Apologies, I missed this question earlier.
In the context in which it was asked, which is If it was generally accepted that a particular space, protection or opportunity was female, single sex only based on physical sex, and person of physical sex M but with a legally altered document that recorded her legal sex as F felt entitled to use it then yes, that person, in deciding that their needs or desires outweigh those of the actually intended users, would be very disrespectful.
If you are asking the wider of question of here and now, when a trans woman who has legally transitioned (of which there are not yet many) is generally expected to use women's facilities, is it disrespectful, that is more interesting.
The TW herself may intend no disrespect and her behaviour as an individual may be absolutely fine (as would be the case for any decent human).
However, she is still aligning with and benefitting from a social movement that equates lived female experience with a male state of mind and believes that female people who want to speak, congregate or organise with just their own sex in some contexts are problematic and should be prevented. That in itself is fundamentally reductive of and disrespectful to female people. So for that reason I can't say she is entirely respectful even if what she is doing is to some degree socially acceptable.
But with all that said, (and speaking for myself only) I would very much like to explore how society could reorganise to accommodate trans needs and female needs more fairly than simply making every pre-existing and originally single sex female provision mixed sex instead, and I understand that means compromises on both sides.
One of those compromises might well be to redesign some currently single sex provisions to properly support mixed sex genders.
And if the exercise was undertaken openly and fairly, with an honest desire to do the best possible for both groups, I actually think it would do better for trans people as well, because for all the talk of "not forcing people into boxes", there are no boxes for mixed-sex women-by-gender yet. The women boxes we have were all designed assuming single sex and that's why there's so much angst about including trans women without any other adjustments being made, because we are making them mixed sex without checking whether that affects how well they meet their origibal purpose.
Trans women, having been misunderstood and unrecognised for so long, surely deserve better than that. For such a huge social change to something that has been fundamental at least in Western cultures for thousands of years, trans women just as much as female people deserve a ground-up rebuild. We both deserve more than just the old stuff with a new sticker slapped on the door.