Well, there are relevant questions here... I believe there ultimately have to be someone else behind this as Microsoft alone would have no interest in the amount of data collected, only the parts that can help them develop the OS. Seen together with the mass spying frenzy of the U.S. government uncovered, it seems likely that Microsoft have been put under pressure to collect it on their behalf.
It is a little funny too you know, on one hand they criticize 'the great (fire)wall of China' and on the other do exactly the same themselves... These days even expanding from just U.S. Citizens to try to spy on the whole world.
No need to emphasize on just one developer in this respect as there is no such thing as a secure OS. To be secure, the only working solution is to disconnect from the net which not too many of us wants to do.
To say that an operating system able to communicate on the net is safe is short-sightedness at best. You may be right for the time being, but only as long as the OS you are using fly below the radar. Once it gets a large enough user base, security holes gets exploited as 'secure' in this context only means that the holes are not discovered yet.