Earlier quoted context omitted.
This "issue" has been fixed with the pass extension 'pass-tomb' that keep the whole tree of password encrypted inside a tomb See https://github.com/roddhjav/pass-tomb However keep in mind it's not always a big "issue", for instance only looking at your browser history will retrieve the same knowledge.
Oh well... I wonder why they didnt make something like this the default.
Pass is pretty much a glorified bash script using GPG and Git.
Adding filename encryption on top would be a nightmare, not to mention that terminal suggestions would be pretty much broken.