You're right. I was calling it a private frontend when referring to it beforehand, and the repo description states it, but I looked at other projects and they used the phrase "alternative", so I switched to it, since that's the common term.
For now it doesn't have personal feed functionality, but if a lot of people want that I may be able to implement it similarly to how CloudTube does. As in, generate a secret, store it in a cookie, and from there save user data. For now though, I want to prioritize RSS subscriptions.