Commentators savaged the Roos after they surrendered their fourth lead of more than 30 points this season against the Brisbane Lions last Saturday night.
The criticism levelled at the Roos included claims they had lost their 'Shinboner' identity, lacked leadership and played 'downhill' football.
Scott acknowledged on Tuesday the Roos had opened themselves up to such criticism with their disappointing 2013 season, but said it was off the mark.
"I respect everyone's right to an opinion (but) I don't agree with it," he said.
"We've got some work to do, there's no doubt about that. We're more acutely aware of the challenges we face than anyone else.
"Those things are very clear to us, the players know in no uncertain terms what we need to work on. But unfortunately these things take time."
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Scott specifically refuted criticism of North's on-field leaders, in particular suggestions Roos captain Andrew Swallow was too nice.
"I think Andrew Swallow is a really nice guy, he's a great guy, but he's a brutal competitor," Scott said.
"Levi Greenwood is a brutal competitor. Jack Ziebell will walk over broken coals (sic) for this football club as will everyone who runs out in our jumper on the weekend.
"No one was calling us too nice a week and a half ago. A bit of perspective is important.
"I've never been more confident in this club's future than right now."
Scott stressed the Roos would not resort to stop-gap measures in an attempt to fast-track their playing list's development, saying they were confident that sticking with their "up-tempo" style of football would bring them future finals success.
"My philosophy is we want to play that style of footy because we think it's going to beat the best teams in the competition in September and that's what we're going to keep driving towards," Scott said.
"We've certainly had some lapses and mentally and physically we've been fatigued at times, which has cost us and we've made some poor decisions.
"But we're going to keep pushing with a philosophy of a style of footy that's going to beat the best.
"We're not into stop-gap measures. I've never talked about that in the four years that I've been here at North and we're going to keep pushing to our ultimate aim."
Scott conceded the Roos still had to learn to defend better in games and to short-circuit opposition run-ons.
But he said a lack of fitness had not been a factor in his team's fadeout losses, nor did he place any credence in suggestions his players were mentally fragile.
Scott expects North to bounce back against Carlton at Etihad Stadium this Friday night, in a clash the 11th-placed Roos (6-9) must win if they are to keep their faint finals hopes alive.
North is sweating on the availability of five players injured in the Lions loss, but Scott was confident Swallow (hand) and Robbie Tarrant (knee) would be fit to play against the Blues.
He said North's doctors would make a last-minute call on the fitness of Lachlan Hansen (concussion), while co-vice-captain Ziebell (knee) had to "jump a few hurdles" and Aaron Mullett (ankle) was "touch and go".
