Honestly, if my build works for me and i am contributing enough to the team, i don't see why my build would be a "noob build".
Remember, everyone has a different playstyle and everyone can build whateaver item they find useful on a certain champion. So just because i don't copy the build from last night's LCS game doesn't make me a "noob". We play to have fun, and experimenting with new builds is fun.
Stop being METAsheep and experiment. Have fun. Don't take the game so seriously. At the end of the day it's just a game.