Not sure why anyone would see the driver tarining as a bad thing...
Even if you don't think you need it (and if you don't you're probably competing at a high level of motorsport) you get a chance to get professional tuition, on a track, in a GT2RS provided by Porsche (saving any wear and tear on your own car)... got to be a good thing
Some friends who've attended the Porsche driving centre at Silverstone say it's a great day out and the instructors are top draw.