Os-prober-btrfs vs os-prober.hook

A bit of a layman's question....
I've read a bit about problems with dual boot after the introduction of os-prober-btrfs.
Is it possible that we need to fix the target of os-prober.hook?

Certainly the old package doesn't need to be there anymore. That being said, I am not sure I understand why os-prober needs to be on the target list.

It seems like that should only need to be run when grub is installed.