You still have to register with them, I'm not sure that is common among NC licenses. I assume this also means its not really open-source (or compatible with open collaboration) if they are gatekeeping (via licences) the free dev licence.

Also consider this - If you got a licence would this "taint" you if you ever wanted to work on a project like OPs? As in, the registration is proof you could access the proprietary QNX code, forming the basis of a lawsuit.

Quantum has muddied the waters considerably here by at some point releasing the code under a fully open license. They tried hard to reverse that decision but I'm sure there are still copies of that version floating around.