File vault combined with iCloud

Hi Apple community did you guys know that FileVault has a recovery key and I think Apple needs to kind of combine this into iCloud cause we’re already using secure enclave or using touch ID or just your password? and why do we still have it even before the Apple T2 chip? It’s not like businesses are using Mac computers and also the drive is soldered onto the main logic board so it’s not like we can remove the drive so why do we still have it?