As an instructor once I have authorised someone to fly solo then I have to be happy that they are competent to manage all the workload on a touch and go; if you haven't got the spare capacity to raise flaps on a touch and go and maintain directional control then you are not ready to fly solo. So this does seem rediculous.
A few years back there were problems with the electric selector switches on the C152/150, which often meant that the flaps were sometimes not in the postion selected, which could cause problems on a touch and go, but even with regard to this touch and go's are part of the solo consolidation.