That would surprise me. I recently introduced a friend to elements. He did play MtG some time, so he's no real newb, but he managed to farm bronze on his very first day without me giving any tips. (because that spoils the fun imo) Obviously, someone who didn't play MtG or something similiar needs more than a day... But not more than two weeks. And I really don't think 2 weeks is too much.
/e: Wow. Thanks for the link. 2 wins in plat is a joke... It'll be raining upgraded cards. Meh, whatever. As it is decided already, I guess there's no reason for further debate.