I had something similar when I first set up the phone, but I disabled it along with most of the other junk. Apart from immediately after an update, I haven't seen it again. Even then it was easy to disable.

I had an automatically installed games folder after the update too, and that was a bit trickier to remove, but it was just a case of finding it in the settings. I'm stuck with Facebook because of a music festival I'm involved with, but long pressing it and dragging it to the top of the homescreen gives me the option uninstall it. I don't know if it's an actual uninstall or just disabling it, but it looks legit