Good questions!!I don't use twitter but I'd I did, I'd be asking him what is the reason for carriers blocking the update on devices, especially devices that are not under contract.
Also, why can't BlackBerry just send updates directly to customers?
Things are different for android since there are so many variants and most carriers sell their own versions so there is some potential risk breaking the device I'd the update doesn't include specific software for that particular hardware, but it's not the case for BlackBerry devices.
It's such a shame that millions of users have no idea there is a better software and they are not even getting it.