I have said several time that I have no problem with the rule being enforced.
a slight drag will prevent over -rotation of the stone.
I really don't think so, especially the light touch that I've seen on video (which, to be fair, was Homan's throw on the women's side). Again, these things are damn heavy, and you're not going to push them around with a finger without making a visible effort.
I would love to see someone go to a curling rink and demonstrate this this is remotely possible.
I completely agree. There is absolutely no reason to do it, because there is no chance it will do anything.