Why then use the app in the first place? I mean, the mobile sites of fb are pretty much functional to me. (Admittably, I am happy to have no notifications on my phone outside sms and calls)
I suspect it'd be trivial to remove the overlay with CSS.
There have been times when mbasic has shown me two items, and that's it. Switching to m returned more. But only going to the full www showed me everything going on.
So now I restrict myself to using Facebook just one day a week. It's not as good as cutting Facebook off entirely, but it at least reduces some of its data gathering on me.