You'll see similar wording from Yahoo, Google, and Microsoft. The way it works is they deny providing access to their servers but then push out the data to the NSA's servers and are compensated for the cost of doing so. Access to the servers owned by the corporations is not what's important, it's availability of your data. None of these corporations say "we do not provide access to your data" they say "we do not provide access to our servers". As we all know data can easily be copied from one entity to another. Who needs backdoors when all the data is shipped out directly to NSA?