I wore a jacket and tie to the event. I'm a developer and I've sold a company. I try to not look like a slob. It will get you further than you might think.
so, I agree with your sentiment. However, you just equated not wearing a jacket and tie with looking like a slob... and then asked someone else not to make assumptions. I'd kindly suggest that his "snob" is roughly equivalent to your "slob".