This is untrue. Aokp still has a permissions blocking app available with their ROM and I don't know exactly what google would be blocking as far as I know CM doesn't distribute apps on the google market. The issue is it was outright blocking vs seeding so many apps would break/fc.
Here's some backup from ciwrl, a CM dev, from March 2012 [1]:
"I can answer the second part, regarding CM inclusion of such a function. And the answer is a resounding "no". Originally, the functionality for CM mirrored that of PDroid, including 'spoofing' the data calls. It was decided that our footprint in the Android ecosystem was too large to ship such functionality out of the box. A million active users of our own, plus the many derivatives that use our source, would essentially cause a million+ polluted data and statistics for app developers.
Not only was this deemed unacceptable, we received feedback from 'the powers that be' that should such functionality be issued directly, CM could very well be cutoff from all Android Market applications, which again, would ripple to most Custom ROMs.
Regarding the original comment of permissions blocking vs seeding fake data(pdroid) are two different issues. Thats why the new incognito mode is not facing a similar backlash.
so please explain why cm would differ from aokp and why google would even make this distinction. They are both the two most popular roms at this time, that support the most devices. With Paranoid Android very close. Saying that Google would block play market access to CM for doing something another incredibly popular rom is doing is ridiculous.