It's a Nexus
What were you expecting?
These are devices in the Google Nexus line. They don't have external storage, and haven't done since the Galaxy Nexus at least. If that's a problem for you, then the Nexus line isn't for you.
Personally I'm more annoyed that they've dropped the wireless charging - if I decide to replace my 5 with a 5X, I end up with a wireless charger with nothing to charge.