Genuine question, not trying to bash the project -- the link here seems to really stress that floccus is just for syncing, but can't you just use Firefox Sync for that?

I already have the ability to send my tabs across devices or sync bookmarks, it's built right into Firefox. The UI could be better, but it doesn't look like Floccus changes the browser UI, which is my primary complaint with Firefox bookmarks.

I'm not sure what I'm missing.