No one, more than linux users, cares about privacy and freedom. What is even the point of using crapbook? Everyone in linux community is either hanging out on IRC or matrix or have self hosted forums
What? Google is a linux user - I doubt they care about privacy or freedom. Same with facebook - that company uses linux a lot while actively opposing privacy.
Lots of people use linux because it's a good OS, irrespective of privacy concerns (see the occasional flareup about some software or another automatically shipping off bug reports - some people don't care, others are incredibly concerned).