Ayup.
Anyone remember 2000? Back when "Bledsoe vs. Bishop" was a hot topic? The Pats made the rare move of keeping FOUR quarterbacks: Bledsoe, Bishop, veteran John Friesz, and some skinny no-name 6th-round rookie QB named Tom Brady. A lot of us wondered, "Why the hell are they keeping four quarterbacks? Why aren't they just cutting this rookie and putting him on the practice squad?" Easy: because Belichick had already decided that Brady was too valuable to possibly lose.
By the time the first game of 2001 rolled around, Bishop was gone, and the 6th-round fourth-string rookie had suddenly vaulted over Friesz and was the backup. A lot of us wondered, "Why the hell is the fourth-string sixth-round rookie now the backup over a vet like Friesz?" Easy: because Belichick could already see the potential of Brady.
If Bledsoe hadn't been whacked by Mo Lewis, and the Pats struggled, and Bledsoe didn't look so hot, a lot of us would've been wondering, "How the hell could Belichick bench a future Hall-of-Famer like Bledsoe for this young Brady kid?!?" (And Belichick would've done it without blinking. See "Kosar vs. Testaverde".)
This is why Belichick does what he does, and we aren't coaches.