I might have different use case than most people that I mainly use it to manage local video files and sync with my phone. The bugs are very similar to the bugs on Music.app where there's a lot of desync between app & local folder, duplicate entries, broken thumbnail, clunky UX etc. The quality difference between that and older macOS built-in softwares is pretty obvious imo (the most obvious drop is Music.app rewrite in Big Sur)