Amen to that. I refer to the former 49ers QB as “Copper Nickel”. Partly because I can’t or won’t take the time to figure out how to spell his surname as he wishes. Mostly because, like the U.S. coins made of that metallic content, he initially shone like silver but is basically worthless.
Like the Wildcat formation, his style of QB was hailed as “innovative” because it was a wrinkle on the standard offense, catching other teams off-guard and vulnerable. Once the other teams’ defensive coordinators had enough time and tape to analyze his moves, they were able to neutralize him, and his glaring deficiencies as a more standard QB were exposed and exploited.
Yes...granted, that is the way of life in football. It is why there are often young players that perform well once they are given time on the field, but the next year, they fall off, and the year after, they are gone.
It is the job of defensive coaches and players to study and counter the tendencies of everyone, including rookie players. After a conscientious defensive back who studies film has a season of video on a player, that really effective move the rookie has won’t work anymore...they don’t bite on it they way they did.
If you are a “one trick pony”, you better have a really good “one trick”, or you will never make it.