this is utterly fucking pathetic. first of all, who will you believe? we only have M$' word that they are not doing anything nefarious with the data, also, check the EULA, you will see that if they were doing something dodgy, they would be within their rights, also you will see that there is no clause to stop them using said data for other purposes in the future. the data will not just expire after a certain period, they have it for life.
Also, nobody knows what actual data M$ collects/has collected. we only, again, have their word for it that it is trivial.
Finally, any collection of data is immoral in my book. If they are collecting my data, they must be doing it so they can benefit. If they are benefitting, i am not seeing any of the profits, ipso facto, they are stealing from me. Those are my thoughts, the end. thank you and goodnight.