I dont fully understand this statement -- I've reduced Facebook browsing 85% because of newsfeed changes in the past year (i only see a handful of people, and a

I dont fully understand this statement -- I've reduced Facebook browsing 85% because of newsfeed changes in the past year (i only see a handful of people, and at times dont even see my wife's posts for some strange reason (NO she is NOT blocking me)). How is it good for advertising that I dont use their product much anymore?