I agree with your point about how the personality of (technology) companies doesn’t fit the security minded person well. As a software engineer, I feel I am in the small minority whenever I mention security or privacy concerns at work. I feel that most technology is evil at this point because of the immense ability of it to violate people’s privacy. It is sad to me that this is the state of the modern tech ecosystem.
It's just back to the worldview of the 1960's. The only computers were mainframes and were seen as the tools of "The Man", conspiring in the shadows against a free humanity. PCs were a liberating force, making computing accessible to the common man. Modern total reliance on global networks reversed the power balance back to central instances.