No, they are not (a few tourneys here and there and some/many Canadian tournies =/= generally banned). And they shouldn't be.
Uttter manure. How are infinites not "low risk, high reward"? What are you possibly risking while infiniting someone? Whiffing?Infinites, im fine with. Grab release infinites are a no-no. They are:
low risk, high reward.
Hard to do =/= High riskNot really. They're hard to do as hell.