[varajelle]

With BSD, you're giving every company the right to take your code and use it without returning any favour at all.

With the CLA it's the same. But at least Signal give back by still providing libsignal as free software.

It depends on your motivations for contributing. If you don't like the CLA or any other things, you can still fork. Even if it may not be compatible with your own motivations, it is still in the spirit of free software.