Fuck that, Magne is kinda new and original while still referncing the mythology. Morningstar is fucking boring and mainstream.
Imagine complaining about a character's creator choosing to change their name. Which they have complete freedom to do.
Charlie's last name isn't even mentioned in the Pilot, so does it matter? Lucifer's canonical name has always been Lucifer Morningstar. Changing it makes no sense without some kind of reason for it.