I try not to judge a person by the camera he/she uses. I love the Olympus m43 system. Sure, it does not create the cleanest files or the most detailed images, but still it is a really nice tool. If feels just right. It's versatile, small, light, and allows me to take pictures with less fuss than what I'd been using prior.
I like the iPhone, Nikon D810, the Sony A7s, Fuji's lineup, Canon's optics, MFDBs on view cams, pancake cams, and a dedicated body ala Pentax. Though for the time being, the Olympus system is just right for me.
The one thought that rarely occurs to me while I study a great picture is what camera the photographer used.