Can you copy TOO much....? Yes, IF copying is the end of where you take your skills.

Copying is where you learn how things HAVE been done. Playing (IMO) is where you learn to put your OWN stamp on things, through the blending of things that you have learned by study (copying, in part) and hopefully your own imagination and taste.

But copying is a tool you should use to forward your OWN style, rather than an end in itself. Copying helps you develop skills you might never have learned by yourself, but it (again IMO) shouldn't be a goal in and of itself....