Firstly, with Martin available, if we can't beat Brisbane with Norton out then we have bigger problems. So I'm not salty over the ejection.
I am also heartened by this and other incidents that the refs are prepared to make calls and let the chips fall where they may.
Way back when, I still recall a certain final where one team got into massive foul-trouble early, had no choice but to keep their stars on the court, and for the rest of the game refs refused to call their fouls because it would have fouled them out.
Is ejection a harsh penalty for two "soft" "techs" Perhaps, but its the rule.
I guess the lesson to players is to know the rules, and if you get called for one (beit USF, tech, or flop) behave yourself and stay on your feet for the reminder of the game.
The problem I have with flop calls, is that the refs are so inconsistent. The same play is one game called a charge, the next a block, and another flop.
The additional issue with some "flop" actions, is that its a matter of safety. If you are (genuinely) knocked off balance and unable to recover, if you simply fall pivoting at your feet then your head is going to hit the floor with maximum velocity. (That's how one punch attacks typically kill) So players scoot backwards so they land on their arse. It can be hard to pick between that and a deliberate flop.
My view is still that they should call the foul that's there, or not, and leave the player on the floor as his own disadvantage.
But again, call on Norton was correct within the rules.