Your point is valid. There weren't a lot of teams beating the door down to get to him, but that is an oversimplification.
No playoff team, who thought they were "close" was going to give up a 2nd round pick.
No team that already had a young QB they believe in would be interested either.
Take those off the list of 32, and how many are really left?
And, possibly, no team that couldn't recoup their R2 pick would have made the trade. Grier gets credit for that.
There seems to be a few categories of teams.
Seems there are some teams that want a brand new rookie regardless what else is available.
Teams finishing in top half of NFL frequently, tend to stay with what they have.
Teams with a 1st/2nd year QB rarely change.
Subtract those from the list and not many teams are left.
In spite of that, I wasn't impressed with ARI coaches last year and I get a rookie QB getting rattled when under pressure constantly. Nonetheless, rationales don't trump production. I'm eager to see what he does.