To be fair, in my opinion there's a big difference: I've never heard of any man having a trans man fetish, I mean, a fetish with people who were born women but identify as males.
To put it bluntly, a trans man who hasn't had sex reassignment surgery still has a vagina, and since straight males are attracted to vaginas being attracted to Mason isn't much of a taboo or fetish for them. I mean, I bet that the vast majority of people who, like you, are looking forward to this content are doing so because he has a vagina and still see him as a biological woman from a sexual point of view, regardless of which gender he identifies with.