You're referring to the Brochet experiment? That wasn't a blind test: the white wine was dyed red with a flavourless dye, so there was an element of deception involved.
Well, that's a bit of a strawman, isn't it, given it would typically boil down to "vanilla/not vanilla" for most chardonnays?
Biased sample. There are many confounding factors why if you cannot tell the difference, it is likely your family can’t either.
I do like the idea of testing my wine drinking friends, who are definitely not snobs. I would bet money they would mostly pick the difference between a normal: Oaked Chardonnay, Reisling, Savignon Blanc, and Cabernet Savignon. I suspect the red wine drinkers could tell some of the red wine varietals too (I would struggle there).