Correct. And only they have inherent immortality. I don't even know if its possible for them to transfer inherent immortality.
But I sure know they can make spirit beings who last forever (but they can destroy these too).
YHWH/Jehovah actually means "He causes to become", which is an apt name for the creator of all things.
All angels are not immortal. Neither is there any such thing as inherent immortality. As Jehovah is immortal and only he can bestow the gift of immortality.
His son Jesus was given immortality as shown by the Apostle Paul in Romans 6:9: “Christ, now that he has been raised up from the dead, dies no more; death is master over him no more.”
The demons who were/are fallen angels are very much fearful of their impending death as the Demon(s) who called himself "Legion" to Jesus plead with Jesus not to send them into the Abyss in Luke 8:31:-
31 And they kept pleading with him not to order them to go away into the abyss.
If the angels were 'inherently immortal' it would mean Satan and his organization were indestructible, which is clearly not the case as divine judgment by Jehovah was conferred on them in the opening chapters of Genesis, which is also evidenced in Matthew 25:41 "
you who have been cursed, into the everlasting fire prepared for the Devil and his angels".