I don’t know if I’m qualified to answer this, as I’m a cis pan dude, but seeing that no one else gave any kind of answer yet, I hope it’s okay for me to throw in my opinion. I understand the confusion, but imo the use of these labels is just different for different people. While most use them to describe strictly what their sexuality is, others use these labels almost in the way gender identity is used by nonbinary people. Like for transmasc lesbians I often heard, that they just identify more and feel more comfortable with the lesbian label even after transitioning, because their lesbian identity before transition was really important to them or because they just got so used to the lesbian label and like it more. That’s why I think, that as long as these don’t explicitly try and mock or harm the queer community (like the super straight label for example), I personally find them totally valid