I predicted there'd be a lot of sanctimonious "I just don't have an account, they're a waste of time" responses, and it seems like I was right. That's great for you, but that's really not helpful to someone who already has an account and is struggling to quit. And it can be a real struggle. The dopamine hits on likes and favs and the fear of missing out on a conversation can be really hard to break.
Like the OP, I'm using StayFocusd and I've used RescueTime in the past, and it's actually been very helpful for me. Right now I've given up Facebook and I'm tackling Reddit next. I don't have a solution for my phone, but it hasn't been a problem for me because I leave it charging across the room when I'm working. It's still difficult for me during evenings, but I'll probably try something similar for that soon.