Yes it really should. It’s much easier for users to identify what “Photos” does instead of “Koko”. It’s infinitely easier to identify at a glance what a “Files” app does versus “Nautilus”, same goes for “Epiphany” and “Browser”.

Off-the-wall crazy names only work for non-defaults because then you guarantee that those who need it will know what it does whatever the app’s called.

Your comment is the prime example of why Linux sometimes gets a bad rep for being too obtuse or inscrutable for the general public. These small things matter. They make a a real difference for the end user. And friction when trying find a single default app/utility is the last thing you want when trying to get people to use your OS.