You say that this scheme won't lead to higher skills or motivation, well I feel I must disagree, and here's why.
Higher Skills:
Well perhaps not high skills but at least higher skills than they will have by just sitting at home or roaming the streets, it will teach them work ethics.
MOTIVATION:
It will motivate them into the working life experience, getting up in the mornings, commuting to their place of work, being disciplined into working a full day, and then returning home after a satisfactory hard days work.
I don't know what the public want, first they complain of the lax-a-day youth, spending most of the day in bed, while still being paid by the government, and then they complain about 'slave labour'.
While not being ideal, and the fact that venues of working places could be better, surely this scheme is a start, which could later be improved upon?