I didn’t mean to be aggressive. Sorry if I came across that way.
If you have unique file names, no matter what database system you’re using to manage your DAM, you’re guaranteed to be able to locate a file if you ever happen to need to search by file name. And chances are one day, probably for a reason you don’t anticipate today, you’ll need to do that.
And I say that as an advocate for using metadata, including keywords and good descriptions and titles, to categorize the files in the DAM. It’s not either/or, it’s both/and.