It's far too simplistic to say, yes or no. If you are inclined towards self-motivated improvement and if you have a good internal monologue where you are able

It's far too simplistic to say, yes or no. If you are inclined towards self-motivated improvement and if you have a good internal monologue where you are able to be real honest with yourself and your own failings and limitations then reading good code opens up the possibility that you can apply the things you take away from it to your own code and become better. Good code isn't a gold ticket, it's always on you.