My students won't solo until they've passed the written and if less than 90%.. not until they're at 90% proficiency in my eyes. They will not go up alone without at least calling me and relating their intentions and letting ME make the weather decision.. ideally, meeting me at the airport for preflight.
So who made you the master of flight? Surely if someone can read a weather forcast and a pressure chart they should be more than capable of making their own weather decisions. And if they've managed to obtain there PPL they should also be able to make their own preflight checks. Surely the whole point of obtaining a PPL or any sort of flying licience is so that you don't have to phone up your instructor to find out the weather and to check the plane for you.
Learning to fly is already the most legistlated hobby you could possibly get involved in and the more legislation you come across the more you have to pay. This sport pilot programme offers flying to more than just the rich or pedantically dedicated. As a pilot who knows the joys of flight you should praise such a progamme instead of bodyslamming it from every possible angle. Just because you have a PPL it doesn't mean you can spit on these sport pilots because of the route they chose. Just remember that even you once upon a time had only 20 hours of flying time and how would you have felt towards anyone who called you an unnessacery hazard to the more experienced?