Would you be shunned? Most likely not. And even if it does happen, it's just a fanboy. This entire Intel/NVIDIA vs AMD thing is kinda like xBox vs PlayStation. So far I had better experiences with AMD products in terms of price-performance ratio.
At the end of the day, if you're using your computer for private services only like gaming, surfing, streaming and so on you wont notice any difference as a layman.