Yep it was but context is key. Neser and Green are obviously in the test picture so the selectors wanted them to be part of the A game rather than playing the t20. Cummins was rested.
I do agree with you to an extent though, could have been something like:
T20: Stoinis, Short, Smith, Lynn, Maxwell, Phillipe/Carey, Cummins, Sams/Abbott, Swepson, Zampa, Tye
A game: Pucovski, Harris, Head, Henriques, Wade, Green, Paine, Patto, Neser, Bird, Holland(?)
I don't think the selectors have missed the mark by that much all things considered - Sams was easily the best bowler in the Big Bash last season and Tye is quite highly rated in t20.
Not to sound condescending but I'm curious to know what you would have done?