Funnily enough, I was literally just reading that the study that started the whole concern about blue light wasn't a reliable study... the lights were very bright and not representative of screens, etc.
I'm usually pretty good about not looking at my phone or computer in the last hour before bed, but I am usually watching TV in that last hour. That said... I'm not having any trouble falling asleep (except on my side). It's the waking up a few hours later that's causing problems.