What do you mean "log into your phone every single time"? (Edit: I didn't mean that to sound like it does, just I don't know what logging into your phone has to do with WSA. Is there a connection somehow?)
I use WSA, and it works like any subsystem - I think this is a key point - it's not an Android VM, it's a subsystem, like the Linux one, and Posix before that. It means apps on those platforms appear to run natively.
I've installed a launcher to WSA, and it makes for a more-Android like experience (makes managing some things a little easier).
The Android apps I use on WSA behave just like on the phone - it's useful for apps that don't have a sync/web service, or apps where the Windows app or website sucks/doesn't exist.