I don't know, it feels tacky to me if it's done by somebody that can barely reach the pedals.

I've always felt that rubat is something used to express a certain emotion, and in my personal opinion, the majority of young pianists of around 12 don't have really that much life experience to say, express a personal feeling through Chopin op.10 #12.
It's a personal thing really. I'm not going to impose it on anyone, but I feel that when the pianist has a understanding of music, and the piece in question, the rubato will be natural.