I've not heard of those, but to me this is a competitor to the much more ubiquitous Obsidian. Which works great, and has a whole community of support, but is not open source.

Personally, I don't need my notes app not be responsible for syncing across devices either. I already have that for other file types (photos, media, etc).

I'm not against these features being added, but this app is young, afaik it's one person writing it, so I'd rather see their time be spent making the note taking experience as good as it can be.

I also generally wouldn't trust one person to properly audit the security of the networking and encryption features. If I wanted those features, I'd still give the community time to peruse the codebase.