The thing about acting is that it's not a scientific profession, it's an artform which is hugely subjective. If a character is trans, it may be appropriate to cast a trans actor. But there are always going to be other factors to consider. It's not a case of cast the person with the exactly corresponding characteristics as the character.
So, as disabilities have been mentioned, I'm thinking of the Dwayne Johnson film where he plays a man with only one leg. It's styled as a blockbuster action movie, and he's one of the most bankable action movie stars right now. It would make zero sense to find an actor with only one leg to play the part instead because there are other significant things to consider - not least that this is meant to trade on Dwayne Johnson's name. That's how the industry works.
Now, say the trans actor in Emmerdale now does really well. They're clearly well cast in a trans role, and it works because soaps have a history of raising awareness of various social changes. But say they become very popular and their profile is raised. Perhaps someone will write a vehicle with a trans character and they will be the perfect choice - not just because of their trans status, but because of their skills and popularity. That's how a popular career in acting flows. I have no problem with that at all.
But, like so many things, the TRA stuff wants contradictory things. They want only trans actors playing trans parts. They also want trans actors playing non trans parts because transwomen are women etc. and inclusivity blah blah blah. I can see half of the reasonable argument for the first sentence. I can't see it being compatible with the second sentence.
Representation and visibility is fine and a good thing. But this is not an industry which works solely by ticking demographic boxes.