I don't think Bethesda is going to sell out like Bioware did for DA 2. Beth actually has respect for their consumers.
I wouldn't really call pre-order bonuses "selling out" One of the things Bioware gave for DA:2 was "the black imporium" which, I don't know if you've played DA:2, but pretty much the only benefit was changing your appearance. So if your problem is the content that they're giving away, itself than you can pretty much argue that Bethesda sold out when they gave you the option of changing your appearance in FO:3. If your problem is the fact that they're offering pre-order bonuses at all then I have to wonder why you don't just ignore them. It's fairly simple to get said bonuses (just sign up for it) It's also very easy to just ignore that they even exist.