I think parents can subsidize their children if they want, but saying she 'can't survive' on 1,200 a month is sad for everybody, and makes the child feel weak/powerless/dependent/unsuccessful which definitely hurts way more than the subsidies help.
I am one of these girls, my dad gave me 500/month handout for 6 months after college while paying my cell phone bill and letting me borrow a car, and you know what happened? I spent all that money he gave me AND the money I made. It wasn't until my pride kicked in and I said, "no more money", that I realized I couldn't eat out, buy coffees, and wander aimlessly in the world forever. So I wised up, found MMM, and am now on my way to financial independence.
The problem is, these parents who are consumer suckkas and car clowns teach their children to be the same way, and though you can afford to be a consumer suckka and a car clown if you make 60k a year you can not afford to be that way on 20k a year, especially if you have a bunch of student debt (which you will if your parents were suckkas). Parents think of their kids as being 'impoverished' on low wages, when in reality they've just inflated their lifestyle to match their income and let their kids ride that wave too. Being accustomed to a lavish lifestyle you don't pay for makes it really hard to say goodbye to it, especially if it's hanging above your head like a symbol of success and your parents are willing to let you borrow theirs for free.
At some point though these twenty somethings will either have to make 60k a year to have independence from their parents, or they will have to decide not to be powerless in regards to their own finances. I for one was not going to wait till I made 60k to declare independence from them. I want to a badass and do everything for myself. That's why I declared independence, maybe other 20 somethings will start to catch on?