Yea, you shouldn't use outright slurs. And if you insist on translating it that way, maybe just give folks the heads up that some offensive language is going to be used.

Unless there are some really toxic DMs being sent to the translator, it feels like the translator made a mistake, that got politely called out, but instead of just changing the word to say, "trans" they just closed up and stopped translating the whole game.

Trans people get abused all the way up to getting murdered for "deception" while this translator is just having some people on Twitter are just saying, "Not cool" or accusing them of being right wing because right wingers do have a history of unfunny trans jokes.