Any QB in the league could do what Rodgers does regarding too many men on the field during substitutions.
However, I don't think any rule should be allowed to be abused, even if correct by the wording of the rule, to give an unfair advantage. If a team is in the hurry up, then fine, but rushing to the line intentionally just to get a penalty called while a guy is clearly running off the field and can't quite get there before the QB calls for the snap is just BS. That's not the intention of the rule, nor does it benefit the quality of play in a game. I don't believe it's what fans want to see, either.
The league should just tell Rodgers that if he rushes out of the huddle to intentionally abuse the rule to gain 5 yards, not with the intention of actually running a play faster, that they will stop him and not allow it. End of problem.