Post-op trans women are definitely accepted as more “legitimate”, both in this forum and in general, aren’t they? Especially when it comes to sharing spaces and do on. The “they still have a penis” thing is much-cited.
As an example, posters in this folder generally aren't so keen on the idea of male prisoners, particularly those in prison for sex offences, being transferred, penis and all, to a women's prison. Seems reasonable enough to me.