You're right, but don't think this isn't of Alan Joyce's making.I don't think it's as easy as that. Aircraft purchases are not like going to a car dealer on a Saturday and saying I'll get the one on the showroom floor.
He inherited an order of 65 B787s made by his predecessor in 2005. 18 years later, the QF Group has only taken delivery of 22 of them, with 11 each for Qantas and Jetstar. Qantas has another 3 waiting for delivery, delayed by Boeing's production issues, but that will be 25 of that original order for 65.
On the narrowbodies, the group placed an order for 110 A320/A321neos in 2011. We're now another 12 years down the road and only 6 of those original orders have been delivered, all of them to Jetstar. In the years to 2029, Qantas will only receive 20 of these (XLRs), so make of it what you will.
Separately they have to have a balance sheet that supports such purchases or cash flow if leased
The interesting bit here is the successive share buybacks with commentary that management thinks it has surplus capital. An unusual decision considering where they are on the capex curve.