“Their country, their rules” is a sound principle, but does not fit this context. Doha is a regional transport hub; most passengers stay airside when they connect from an incoming to an outgoing flight; they do not cross a border or enter Qatar.
I don’t have experience travelling between Europe and Australia, but I do have experience travelling between southern Africa and western Europe and the US east coast. Even pre -COVID, airlines will and do routinely reroute passengers through airside connections. In real life, you don’t have the chance to say “let me think about it” and go off to research Qatari law. If you say no to the offered rerouting, you almost always forfeit your flight and have to make and pay for your own alternative arrangements. Even with the laws that protect customers in/from the EU and North America, this is true - but the majority of the world is not protected by those laws.
It does suck if people are talking about this only because it happened to Austailian women, who had the opportunity to speak out. But it doesn’t suck that people are talking about it. If these Australian women and the Australian government and media can get people talking about this - and they have- then I say go, Australia!
It seems that the Qatari authorities have promised a response by the end of this week, so perhaps we’ll all know more then.