Irsay was interviewed on ESPN and tried to backpeddle. He said, "It's hard for me to see why anyone would think what I said was negative."
Very simply, he threw Peyton directly under the bus by implying that Peyton had underperformed and was less than a total success in Indy because: (1) Peyton only won one SuperBowl ring with the Colts, and (2) Peyton's overall playoff record (losing in first game 7 out of 11 playoff appearances, etc.) was poor.
Being petty and unappreciative is not rare for Irsay. But he said in a very public setting (and before Peyton's first game return to Indy) what a lot of other people believe about Peyton. Namely, he puts up tons of statistics -- but he doesn't perform well and loses most of the biggest games in the playoffs.
It gets back to the discussion of where Peyton fits in the list of Greatest of all time QBs. Cris Carter said it well on ESPN a couple weeks ago, commenting on Peyton's gaudy statistics, but taking a good shot at him for not leading his team to victories in most of the biggest games.
No matter how good your career statistics are, any QB (in the SB era) without multiple SB rings is not going to rank in the top 5 of GOAT discussions. But Joe Montana will always be there.
It's obvious who the truly clutch performers are -- the QBs with ice water in their veins who are great leaders and win the biggest games.
Peyton has a great opportunity this year to win the SB and quiet his critics and solidify his place among the greatest QBs of all time. I hope he does. But if he doesn't win another SB, nothing else will matter -- no matter how many TDs he throws or how many miles of passing yardage he accumulates. In that respect, Irsay was correct -- and there's a lot of other people who agree with him.