It's all subjective anyway. Some players wear long sleeves. How do they decide in their cases? They just randomly decide a place where the upper arm starts.no - that's nowhere near where the new rule states offside begins. It's at the shirt sleeve or upper arm, not the shoulder. Rules. Offside by the rules. Get over it
I don't think Laporte's goal should have been cancelled, but it doesn't matter in the final reckoning, today at least. It would have mattered if the game finished 1-1 though.
In black and white decisions like that, there should be consistency. All too often, the authorities favour the underdogs (or the favoured team for that particular season). Being generous, this could be attributed to natural bias.