I base my opinions on science - not feelings. I will not "redefine" established scientific concepts simply because those established concepts hurt people's feelings.
Wiki defines "homosexuality" as follows ...
Homosexuality is romantic attraction, sexual attraction or sexual behavior between members of the same sex or gender. As an orientation, homosexuality refers to "an enduring pattern of or disposition to experience sexual, affectionate, or romantic attractions" primarily or exclusively to people of the same sex. "It also refers to an individual's sense of personal and social identity based on those attractions, behaviors expressing them, and membership in a community of others who share them.
The key words here are "between members of the same gender" and ... "Enduring Pattern".
Therefore while sex with a TS can be classified as a "homosexual experience", it's not homosexuality unless there is an "enduring pattern". Similarly, prostate massages and dildo play between males and females cannot be classified as a homosexual experience since the behavior takes place between members of the opposite sex.
A homosexual experience has NEVER been defined by an "oriface". Many Gay men do not engage in anal sex. "Who's on top" is irrelvent.
I do maintain that - scientifically - TS providers with exclusively male genitalia (functional or not ... There are many "straight" men who have lost "function") ... and / or who have the "X/Y" chromosome combination are ... MALE.
Which is why i still don't understand why gay providers are banned from ECCIE becauae TS providers meet the scientific definition of "homosexual".
EDIT: Having said all that - my ass is off limits to everyone - including female providers. Write that down. Leave my ass alone and I will leave yours alone!