In case anyone is curious about why this was problematic:

https://paragonie.com/blog/2016/08/crypto-misnomers-zero-kno...

Zero Knowledge is something you're most likely going to find in an authentication protocol, not an encryption protocol.

While I have mixed feelings about "No Knowledge", it's at least not a collision with a different concept.

Good on SpiderOak for the effort here. It shows they do listen, at the very least.