Hi, welcome to the forum!
I don't think that's what synchronize tags does. It's there to fix problems where somehow the database and the files have become mismatched (out of sync), and is like the opposite of rescanning - rather than changing the database to match the files, the files are changed to match the database. At least that's my understanding, someone may correct me.
Inconsistent tags means tags that don't match between tracks in an album. You can just retag the affected files. If you give an example of something that's showing up as inconsistent, maybe we can offer more advice.