Ant is a #1, he's just a young and learning one. He doesn't have the experience that Luka and especially Kyrie have, but he has put the team on his back and won multiple playoff games this season.
Completely disagree on KAT. He hasn't proven that, he's currently in his prime, and in his biggest playoff series of his life, he has been mostly terrible. Even last night when he was good offensively, he still committed dumb foul after dumb foul. No matter how many times Ant or Finch or whoever tells him to stop committing dumb fouls, it never changes. That's not what a winning player does.
We will be up against the max no matter what next season. Shorter/expiring contracts help us out significantly beyond next season compared to what it's going to be like keeping KAT's 50+ million salary for the next 4 years.
I think you're just taking my Kahn comment too literally. I wasn't thinking about it as what would Kahn specifically do, just as what any bad GM, like Kahn, would do and continue to think KAT is going to change with more time.