The Porro of this season is much, much better than the Porro of last season. The Sarr of this season is also better. The Romero of this season is much more composed and reliable. The Richy of this season is night and day. The Biss of this season... Etc etc.
These are all players who were available to the previous coach, which suggests that, yes, there is some pretty impressive coaching going on. Unless these players all just miraculously improved... randomly?
Also, you speak about people wanting to have it both ways, yet here you are banging on about how great Postecoglou's squad is, however as soon as the subject of Levy or ENIC comes up, no doubt that'll flip to the managers not having been backed and most of the players not being good enough. Curious.