Yeah, me too. I don't quite get the appeal of the tags living in the file name. Yes, it means that there isn't any need to maintain a database, but it also means that a) things become very unpleasant if I want to use anything but TagSpaces to browse my files, b) if I want to use anything to rename my files (especially automatically, i.e. a script) I have to take extra care not to muck up the tags, and c)if I want to share files with other people or organize files that I don't strictly own, then everyone else has to deal with me trashing their file names for my own convenience.
So, yeah, show stopper. Also, what's so bad about a database? Yes, the file system is very good at keeping track of files, but there are databases that largely don't get in the way, like sqlite, cdb, etc. They will sync across servers reasonably well with things like dropbox, as long as you don't have lots of people trying to concurrently do stuff from multiple places. If that's what you're doing, this kind of tool isn't right for the job anyhow.
So, yeah, show stopper. Also, what's so bad about a database? Yes, the file system is very good at keeping track of files, but there are databases that largely don't get in the way, like sqlite, cdb, etc. They will sync across servers reasonably well with things like dropbox, as long as you don't have lots of people trying to concurrently do stuff from multiple places. If that's what you're doing, this kind of tool isn't right for the job anyhow.