Well "like" and "follow" should be different things. I follow users on instagram/strava because I want to see what they do. I like the content they post when... well, when it pleases me, or I want it to get some more attention. I deleted my facebook account after nearly 10 years with the service, but I hated the decision they made to show content from pages you've liked (often inadvertently when you meant to like a post rather than the page). I fought against facebook for the last few months as I kept "unliking" every page/profile I had ever liked, but it was hard to keep that clean.