A non Jew saying Jewish prayers is absolutely appropriation. There’s a rather clear line of thinking surrounding this in the greater Jewish community especially amongst the rabbinical crowd, and the Messianics are a rather large part of it.
Rabbis aren’t popes. They don’t get to decide what is or is not offensive to Jews in general. Sure, very religious Jews might have a problem with it. And I could not care less what they think. Especially when they’re the minority in the U.S.
62% of self-described American Jews say being Jewish is mainly a matter of ancestry and culture, while just 15% say it is mainly a matter of religion. Even among Jews by religion, 55% say being Jewish is mainly a matter of ancestry and culture, while 66% say it is not necessary to believe in God to be Jewish.[3]
https://en.wikipedia.org/wiki/Jewish_atheism
Do you honestly think most Jews would have a big problem with my wife saying a blessing over the menorah when most of them don’t even think you have to believe in a god? I guarantee you more Jews were offended by Bradley Cooper playing Leonard Bernstein with a prosthetic nose than they would be over a non-Jew saying a Hebrew prayer.
Rabbi’s aren’t Pope’s and they’re born to argue so when the vast majority of them clearly state that a non Jew saying Jewish prayers is contrary to the principles of the religion then I’m going to accept that as a religious decree.
So yea your non jewish wife saying the bracha is a problem. You’re welcome to practice as you see fit, no one’s going to pull your Jew card over it but that doesn’t make it halacha/Kosher/ cool or any other version of acceptable.
Why do Rabbis get to declare what is cultural appropriation when only 15% of American Jews say Judaism is about religion?
It sounds like you are offended by it. I would love some evidence that the general Jewish population agrees with you.
