re: I've received black truffle "flavored" olive oil for a Christmas gift

I agree but how many times have you shaved a white or black truffle on any dish cooked in your home kitchen?

And if you tell me ten out of those ten how many do you think were actually French and not Chinese? I'd say nine plus times it is Chinese which is nothing like a real French truffle.

As a Baton Rouge cook (and before the New Orleans peeps jump up this includes them) probably the best a home cook will get is a truffle infused oil which is as authentic as real balsamic
vinegar. Google that for clarification. Or perhaps a Chinese
version.
And many French chefs get flamboozoled by a Chinese truffle even in their own backyard.

My guess is this. Neither me, nor you have actually had a real experience of actual Perigord black truffles, or at least not in a residential environment.

Or for clarification since I have no clue for yourself, I myself don't have that experience.