I don't think it can hurt to drop a line to Qantas if you are concerned.

Whether or not you had been drinking, whether or not you should have caught the flight in the first place.. both probably not so relevant. What was relevant was that a passenger - however they go themselves into the situation - potentially needed medical assistance and this was allegedly dismissed.

If you would like this to be mentioned in future training or as a crew advisory, writing in might be your best bet.