Eh, from what I recall, the mod didn't had any DRM shit before it got given to Trol. When it was on Schnu's hands you could just download it and use it. You just had to wait for the public version to be available, since he used an early access system. So backers would have the mod before the public version was released.
The whole BS of having to do an ID check to access or use the mod, like at all, started when she began developing the latest versions. Which let's just say that while I appreciate it that she finally added futa content to the mod, which was something that was so needed to be added in my opinion, the gameplay started to be messed up in compatibility with other mods/extended gameplay features (like messing up with how shaders rendered things), also a needless shift of focus into locking new content behind combat encounters.