Are we really trying to boil the season down to KAT not being a good pick and roll defender? I think that was clear before he came here- Minnesota made a huge trade for Gobert to solve this problem.
Knicks approached it from a different way, with 3 great wing defenders around him. It was pretty clear by January that this wasn't working, and you saw Thibs increasingly turning to the Robinson/ KAT pairing during the playoffs. Those lineups didn't have defensive problems.
I'm still going back to the coaching here. Rose gave Thibs a great roster! Between Hukporti, Achiuwa, and two halves of Sims and Robinson, there was plenty of opportunity to try out the two big lineup and more importantly develop some other play styles.
Indiana wasn't an unsolvable offense. Robinson, Wright, Hart, Deuce, and Shamet were able to solve them. There's no way you're telling me that a Brunson, Deuce, Bridges, OG, and Hukporti lineup couldn't have similar success.
The issue has nothing to do with personnel and everything to do with coaching. Whenever Knicks were in a rut, Thibs would trot out the Brunson, Hart MB, OG, KAT lineup. Sometimes it worked, sometimes it didn't but there was a ton of data showing that it no way was this a lineup other teams should fear. It was average.
This has been the case with Thibs for years. There were 3 years of data showing IQ was a +/- god. Same with Deuce this year. I love Thibs, he's a great coach. He got a ton out of players but now it's time to move on.