Firstly, it's not 10, it's 20 aircraft owned by Qantas.
The rest are shelf companies. Who knows who the companies are owned by.
With names like 'QF CALYON' and 'QF BOC', registered address 203 Coward Street Mascot, I'm going to take a wild stab in the dark and say they are owned by Qantas. Same with 'WOMBAT LEASING', Eagle St Brisbane. As far as the many leasing companies based in the Cayman Islands go, I'm sure that the fact that Qantas mainline has had a long history of owning leasing companies there is pure coincidence.
Secondly, even if it is only 1 aircraft owned by mainline, all of the points raised in my previous posts remain valid. I'm trying to understand the point of your post. Is it that a little bit of shonky accounting is ok?