I think its pretty clear that F1 has a problem with these tyres.
-When Raikkonen says he had just one chance to have a go at Vettel for the lead, after which his tyres fell away,
-or when Nico Rosberg after a race win says he didnt push his tyres at all,
-or when we see drivers walking out of their cars fresh even after a race like Malaysia, you know we have a problem.
As far as I can see, the other drivers being asked for an opinion, namely Rosberg, Vettel and Webber seem to carefully sidestep the issue at hand and talk about how great the 'racing' has been. Thats the diplomatic way to answer questions about Pirelli.
No one is directly addressing the compound as such, and why drivers are not being able to drive at the limit without worrying about destroying their tyres. All they talk about is how having to manage these tyres is improving the show. This is a form of deception at its best.
What Schumacher is primarily hinting at, is that the compound is too sensitive to drivers or cars pushing them. Which is not to say the racing isnt exciting, but that the driver's potential input to making the car go faster is being negated or restricted by the tyres.
I appreciate Schumacher's forthrightness in this issue