Someone in the comments on the first Ars Technica article wrote that Facebook took down the page for one of their websites (a wiki) and they lost loads of visitors because of that, never recovered, closed it down.
And yes, it is 'bad' and given those events 'not smart' to rely on Facebook for bringing in your visitors. But that's where they are at these days. And Facebook just 'randomly' killing pages, accounts, content is just messed up.
My point is basically: you can't really avoid/ignore Facebook if you want to get your name out there. (Sure, this might not apply to everyone but you get it.)