You didn't manage to rent a flat by yourself. You were given money to do so, by your own admittance. I don't blame you for taking advantage, but you're using it to argue that young people can or should be able to make it on their own. You've just got anonymous parents supporting you in place of your own parents.
Sorry but that doesn't address the issue at all. I got the majority of money through working, and that was at weekends and holidays, I wasn't in a position to work full time, which i am assuming the people in the article are. The university hardship funds were a bit of extra money, but not a huge amount. No one has explained what has gotten so expensive that a full time low wage job can't support it.