People already know about the filter bubble, but they don't actually care. Most people aren't going to Facebook for an unbiased stream of news and they don't like to feel uncomfortable (i.e. be barraged by things that challenge their core beliefs).
Willpower and motivation fascinate me. I've been living with depression for a while, but I've been able to conceptually reorient myself to embrace my circumstances and find willpower to do the 'I don't want to, but I should' things whenever they come around. But just as I don't think everyone is capable of advanced systems programming, for example, I'm not certain that everyone is capable of strong willpower.