No, this is simply a strategy. Your team gets to do the same thing on offense. Offense controls the ball, they control the tempo. This is completely different from a player faking an injury. How can you not see the difference?
OK, please read carefully… I am not stating equivalence. Please read that again. I know you can read.
Now. Though not equivalent actions, they both violate the spirit of the rules:
1. Stopping play to care for an injury is clearly the spirit of the game by the rules which support that - injury time outs.
2. Allowing both teams to get set for the upcoming play is clearly the spirit of game by the rules which support that - substitution rules.
Allowing extreme tempo where the O can call plays in advance and the defense cannot adjust is allowed but unethical.
Allowing players to fake injury to allow the D time to adjust is an unintended consequence of allowing extreme tempo.
The two are not equivalent, but they are related and both are an unethical violation of the spirit of the game rules.