Charlotte, how do you feel about singing a French song in—say—French? By that line of reasoning, wouldn't that be "faking" an entire language?

(Take that, Theodore Bikel and Cynthia Gooding!!)

If you can pronounce the language or dialect correctly (and one can do that in one's own "natural voice"), there is nothing "fake" about it. The only quibble I have is when people don't do it well.

And if you can't do it well, you probably shouldn't.

Don Firth