So, because other countries' laws until relatively recently were similarly sexist and barbaric, that makes it OK?
Victim blaming used to be OK as well.
As has been said, those women were hardly there for a holiday, but were Australians who have been trying to come home for who knows how long. Maybe they had lost everything overseas, maybe they were coming back after dealing with family tragedies. Perhaps they had been living and working there or were passing through an international hub from other countries. If this airline was the only option to be able to come home after being bumped countless times at the cost of thousands of dollars then that doesn't justify what happened to them.
It wouldn't justify the same thing happening to men, either.
I can understand you want to get to the facts, I have posted a link where the victims have said what happened. One fact for sure, Australian women aren't going on frivolous holidays to Qatar