You are of course correct, but if you head high tackle you are penalised at the place you hit him not 50 meters further down the pitch to me a miss placed kick is not as serious as a head shot, plus a kick out on the full is only punished by a scrum from the place a kick is taken. the only other way to save the problems is to take the posts out ofr the field of play as in the American game.

He would have still hit the bar if they used the same posts as NFL, freak kick so whilst a penalty seems harsh we'd land up with another 30 rules to try and account for it happening again.

How many times?

There is no such thing as a linesman in RL.

The offence took place on the halfway line - where he kicked it from. Take kicking out on the full in general play; the scrum/handover takes place where the ball was kicked from, not where it landed.