I think you’re being a bit harsh with that to be honest.
Let’s look at this from the (admittedly rather narrow) perspective of a coaster enthusiast visiting from Europe. This person has been to a few hundred parks, and has been looking forward to the ones in Australia for years.
They arrive at a park and discover long wait times. Stuff happens, so it goes. Then they make it to a ride station and discover that the Intamin that would dispatch every minute or so in the rest of the world is going out at around 20% of that speed due to additional checks and faffing about. They’re only going to get on a tiny fraction of the rides that they’d hoped for - because, as someone else said in this thread, Australia knows better.
Yes, they will be angry. And objectively I can understand that.
Safety is important, but it’s completely possible to be both safe and efficient.