Sorry, but think about it! You do not REFRAIN from flying; you do not feel instinctively capable of flying, do you?

It is well demonstrated that infants do not lie; if an infant refrains from teleporting then either: the recall of the incident is mistaken; it was really wishful thinking; or the ability was genuine and the "refraining" was a genuine withholding a real option. I am the first to say the proof of that pudding is in the eating.

Logistics-wise; teleporting creates issues re: changes in altitude, air-pressure; passport issues etc.!