When your storage is encrypted on android, alarms that you set will still fire without unlocking the phone.
Someone at Google thought about this and intentionally patched it in, so that you won't miss your morning alarm even if your phone crashes and reboots or loses power and you just plug it in.

If we put this one guy in the programmer eugenics breeding project, in a 100 years we might finally have software that isn't annoying dogshit all the time.

Think about it: You'd need an unencrypted extra partition just to read alarm data and other tidbits from there. And an interface so apps could deliberately write there. How did he get this approved? It's a disproportionate amount of work compared to the benefit and it's a small annoyance that you would have to notice in the first place. This guy definitely has the faustian :A10: spirit!