I'm admitting that they are playing for free kicks, including Selwood. This crap that they are just evading the tackle is bullshit, they are trying to get a free kick by duping the umpire and watch it disappear with the new rule.Btw in your first paragraph you mentioned precisely the exact reason to raise your arms, then proceeded to contradict yourself and say there is no reason.
You're admitting it takes superior prejudgment and skill to pull it off. So that means you're basically saying you are not allowed to be better and smarter than your opponent if what you are doing screws with your opponent's ability to deal with you.
If you choose to lay a tackle around the elbows then it's your responsibility to make sure you hit the tackle tight enough that they can't swing the arms up. If you're incapable of doing that because you're weak as piss or have s**t aim then don't tackle because you will end up tackling his head. It's the tacklers responsibility end of story. No one's forcing them to lay the tackle.
Being a scammer or con artist takes skill too but it doesn't make it right, the same logic applies to players who's intent is to draw a head high free kick.
I believe the going low is going to be very hard to judge and think it should be umpired similar to how it was a few weeks ago. The arm lift is obvious and if you're shrugging the tackle so it turns into high contact then you are contributing to the issue of concussions etc and shouldn't be rewarded. It will not prevent the player from shaking the tackle and getting off a handpass if they are good enough, exactly what happens if a player decides to duck under a tackle atm.