Well Redsnail has beaten me too it in pointing out this is not just a Australian thing. he UK at resent is a total Foxtrot Uniform.
Outsourcing is never a good idea and when organisations do it to the point of dependence and something goes wrong chaos ensues. Add in Brexit and government who are alternately corrupt and incompetent who thought getting rid of all Covid restrictions was a good idea when it lead to almost 10% of the country being off sick and you have the chaos that is Easter travel from UK.
Add in the 'management factor ' common to BA and Qantas where marketing -making money is good and operations costing money is bad and a you get a situation where thousands of BA exec club members are getting emails saying along the lines of its April its spring its time to fly at a time when the media is full of pictures and horror stories from UK airports. No coordination because senior management either don't care or don't understand anything and few, if any, ever came up on a career path that exposed them to the complexities of whats involved in running something like a major airline .and just manage by numbers.