(a) I think that's the same problem that all consumer devices have that "phone home" for updates; game consoles, TiVos, smart TVs, VoIP phone adapters, etc.
(b) If all you need is archiving of your stuff, and you don't want ongoing fast access to your movies, music, photos, etc., then sure. Glacier is probably a better fit.
(b) If all you need is archiving of your stuff, and you don't want ongoing fast access to your movies, music, photos, etc., then sure. Glacier is probably a better fit.