[revscat]

I'm sure there are justifications for this clause, but that doesn't change the fact that you can no longer fork the code, and that API changes are under the control of a single entity.

This is almost the textbook definition of closed software.

[DannyBee]

You can fork the open source parts of the code, even the open source parts of the SDK code. The SDK code is not the same as the SDK download.