I would love to remove non floss obsidian from my day but its just so gosh darn useful. I came across Silverbullet a while ago in one of my periodic searches for alternatives.
Main issue getting in the way for me to even try it is docker. I understand that once you are comfortable with it, its convenient, but I never got there. I have tried running it every so often and its always some kind of issue that makes me give up. I keep a list of docker-only software to try in the event I ever get over that hump and this is on it.
As a competitor against obsidian, Joplin etc the docker pre req is a very high bar to clear. Overwhelming majority of users of note taking apps have not and will not run docker.
Knowing this, it makes me less excited about this project as it exists today because the best thing about obsidian is the giant user base creating so many plugins and tools to work with it. I wouldn't care for vanilla obsidian at all, it is made great by all the community generated add ons. So a small user base is kind of inherently a knock against any given project for me.
I don't know or presume this projects goals. If they want to be an alternative to desktop apps for less technical user-base, this would have to be resolved. But totally legit if that's not the priority.
I wish more projects would have cheap rate subscriptions. Bitwarden was my first floss subscription and I don't even consider canceling it even though I don't really need any of the premium features. (I think its more like 1€ per month.)
But these "its the price of a fancy coffee per month" ones.... Girl I haven't had a fancy coffee since like 2018.