I think there is a heavily (right) libertarian slant to "privacy" because of various issues such as

• having the time and wherewithall to acquire the background technical knowledge to understand the issues
• as a "hobby" it is expensive requiring purchase of specialized devices (like getting a pixel, even a used one, instead of a cheaper more common phone so you can install a custom ROM)
• intersection with "prepper" and other right wing ideologies
• intersection with criminal/corporate interests

those who are successful enough to hire lawyers and other pros to help them

• higher levels of privilege which allow one to exempt oneself from surveillance if wanted

don't need to be on facebook, whatsapp, venmo etc as a matter of survival

• discretionary financials available to provide funding
• have status and influence within private, public, nonprofit, software, politics etc

So all the above is the ideological foundations. It selects for the people you can find in forums, producing content like writing or videos, contributing to software or other development projects, or running organizations. It snowballs. Plus the individual solutions are inherently more digestible because they can at least be implemented a bit. With them is the false logic that if only everyone (or some critical mass) would get with the program, then the problems would be solved. (Like how everyone decided to only buy cars with seatbelts.)