Word. At one point in my post-secondary education career, I rebelled against being present online as a Computer Science major. I rejected LinkedIn. I met like-minded people at school and got my first job after dropping out of school.
One of my good friends never post anything online. He rejected the game of selling yourselves to the employers altogether. He thought the game was meaningless and the prospective employers should see through her talent without the game.
After a few years, I became discontent in my job. My network was only from the like-minded people offline. Some folks did the job for decades and didn't see any reason to change.
Eventually I chose to play the game: I joined in-person networking events, signed up a LinkedIn account and created a web development portfolio. I had good job leads and learned about the companies and the positions through the events and LinkedIn. Note that LinkedIn was only for professional purposes: I didn't broadcast my opinions via posts or comments but simply clicked "like" for the connections' new job announcements. I got jobs that paid 40% more than my old one which afforded me to get air conditioning at home finally.
My friend still lives in her parents' home and has no career prospects for almost 2 decades now.