While those are valid points, I don't think the idea is "plan to live off the welfare system" but rather "take the risks and try something new", because if you fail you have a safety net to catch you and help you get back up again.
Totally agree and I would argue that there even is financial gain for society in letting people take such risks. Maybe I was kicking at an open door, but my point was that there, in my opinion, does not exist a huge incentive to misuse the welfare system voluntarily.