Only about 1% of tech workers are employed by companies headquartered in Silicon Valley, let alone San Francisco. The absolute vast majority of technology employment is at companies that don't have a direct technology product. Software engineers working at traditional businesses like banks and retailers far overwhelm the employees at FAANG and startup type companies.

You're buying into an echo chamber concept because you don't realize the extent of the universe you're characterizing. You're mistaking the echo chamber for the reality, kind of how people mistake what people say on twitter for what people actually think.

The President of America believes that the tech community suppresses him personally.

I mean, sure, you could say “both are in their own ridiculous echo chambers”, but the walls of both those echo chambers were built by the tech industry.