I moved from Atlanta (used to visit Chattanooga once a week to visit Gf in ringgold. Moved to palo alto. Couldn't disagree more. Bay Area is incomparable.
This definitely isnt a place for everyone, but if you love the outdoors, a low cost of living, super fast internet, and other startups with similar interests, Chattanooga is an ideal place.
I think to get a feel for the culture, community, and people who are doing startups here and living in that scene you've got to be around downtown, southside, & northshore really embed yourself
but yes, as twog said, Chatt won't be Palo Alto - but Austin, Boulder... definitely.