Mozilla actually owns pocket now; they seem to believe that giving people recommendations from around the web is the best way to combat walled gardens who want all your content going through them. This article is pretty revealing: https://blog.mozilla.org/blog/2017/02/27/mozilla-acquires-po...
I still don't think it should be proprietary, and I don't use it, so
extensions.pocket.enabled = false
is my friend.