Are locations included by default? Seems to me when I installed Messenger I kept getting popups "do you want Messenger to track your location" etc which I denied reflexively. Could be wrong. I poked around in settings and am reasonably sure I am doing all I can to keep my locations private, although I could not find an exact box that said so (of course).
But yeah, the bigger issue is that I hate Facebook the more I am forced to use it. So much crap for the relatively small advantages of networking with a handful of people. It's a bad service that cries out for real competition. I don't use 98 percent of its "features."