Previous member of PrivacyTools (before the split) here.

I have personally found it sad that they relicensed from CC0 for both content and code to CC-BY-ND 4.0 for content and MIT for code. I don't mind MIT, but CC-BY-ND? How am I supposed to contribute to a NoDerivatives project?

> I agree to grant Privacy Guides a perpetual, worldwide, non-exclusive, transferable, royalty-free, irrevocable license with the right to sublicense such rights through multiple tiers of sublicensees, to reproduce, modify, display, perform, relicense, and distribute my contribution as part of this project.

Also when contributing, you have to agree to relicensing by them.

I wouldn't have contributed if that was a case back then.