Yeah, but what if you changed the play completely.
Let's say you line up in a traditional spread formation with 4 WRs and a HB in the backfield. Assuming it's the last play of the game, they may only rush 3. Now with your 7 "smurfs", you can just toss it to your HB, who can immediately send it to one of the "smurfs", provided they are running backwards initially and to designated spots.
It's unlikely that their rush of 3 will have any effect, if the ball changes hands immediately with a designated play of this sort.