wildcat was different no one ever saw that in the nfl. it only worked that one time though. That was a gimmick one shot offense
It only worked one time. Well, then another time. And it also single-handedly won games the year afterwards, when teams knew the Dolphins would run it all game, and since it was more than a one trick pony by providing multiple options in every snap it was very effective.
A team dedicated to running wildcat plays could still win in these days, its just that the read option and everything that can be run off it is even more dangerous because the guys running that bring the threat of chunk passing plays.