Flutie is a fantastic example of a "what if" player:
1. What if he were taller?
2. What if NFL coaches/front office types took him more seriously early in his career?
3. What if he didn't have to jump to the CFL to get a shot to start?
I don't buy this. His first NFL season he joined the Bears in October 1986. Coming in midseason, he was behind McMahon, Tomczak, and Fuller and started 1 game. That does not seem unreasonable.
It's been well-documented that Ditka didn't want Flutie in the same way Glanville didn't want Favre and made a fool out himself in front of the local media about the Favre pick. Considering Glanville is considered a humorous part of NFL history, and if he weren't a great TE, Ditka would only be known for riding Buddy Ryan's coattails and trading away his draft for Ricky Williams. So yes, I believe that Ditka buried Flutie on the bench. Plus, the Bears won a SB in '85 so of course Flutie would be buried on the depth chart. This team was a defense/running game team that needed a game manager who knew the offense. Obviously Mike Tomczak and Fuller certainly had better careers than Flutie He was traded to New England in October 1987. He started 1 game during the strike, which no doubt did not help him with his NFL teammates when the strike ended. And again, he arrived during the season, so it is not unreasonable that he was behind Grogan and Eason when the strike was over.
Once again, Raymond Berry didn't like him either. If you're going to rate the first two years of a QBs career you might as well have put so-so starters over guys like Bradshaw, Elway, Favre, McNabb, Brees, Moon, and that's just the top of the list.
Then in 1988 he started 9 games and played in 11. The real problem IMO is that his QB rating that season was 63.3... that is really awful. Then he started 3 games in 1989 and played in 5... and posted a 46.6 QB rating. I don't think anyone should really be surprised that he was out of the NFL in 1990, and I certainly wouldn't interpret that as him not being taken seriously or given a chance.
In '89 he had a total of two attempts in two of those games he "played," lost one of his three starts to a very good Bills team, beat a playoff caliber Houston team, and lost to the Falcons by one point. In '88 he also had a 4 TD game against the Bears and led the team to a 7-4 record as a starter. His stats were bad, but considering he didn't have nearly the attempts most young QBs get in their first three two years I'm not buying your argument, either.
The player most like him in the NFL today is Drew Brees, who is just tall enough - even so, Brees encountered plenty of criticism by media types that he was just too small and lacking necessary arm strength to be a starter. Now he's arguably one of the three best QBs in the league.
Brees is two inches taller and 30 lbs. heavier than Flutie (using PFR data). I agree that NFL people can get caught up in certain measurables, but it is true that a 5'10" QB is at a disadvantage compared to taller QBs. Has there ever been an above average QB in the NFL who was 5'10" or shorter?