We witnessed and in story caused the death of Murozond in End Time, we know the “loop is closed” according to Nozdormu’s speech, but what we have yet to witness that must come to pass at some point in the future is the turning of Nozdormu to Murozond.
We have no idea when this event happens in time, maybe the seeds of this event were planted when he witnessed his “death” in End Time which eventually will cause him to fall into madness thus sustaining the loop.
If it follows time logic, what happened, happened and always happened and no matter the attempted meddling could not happen any other way and if meddling succeeds then it always succeeded and was always a part of the past creating the existing current future.
He was charged with protecting the timeways and making sure things happen as they should…they did…he was destined to become Murozond before he was even chosen to watch over time, he was always going to become Murozond, he was always going to create the infinite dragonflight, they already existed in the future and thus he always kept the “correct timeway” intact…whether he wanted to turn into Murozond or not, whether we try to stop him from changing or not, he was and always became Morozond.
For all we know, after Nozdormu becomes Murozond, he lives and attempts to meddle(but not really because what he does always happened and could never happen any other way, his meddling was always a part of time/effect) for thousands and thousands and thousands of years before we see him in End Time, what we encounter in DF might(and should be) just be baby stage Murozond and we shouldn’t be able to kill him because we do that in End Time…but maybe he uses his time powers and stops Galakrond from dying and we end up facing off against him…
As confusing as it may be, Galakrond did die how he did, and his bones were in dragonblight, but in the future Murozond does go back to stop his death and hide him from the world until the correct time to unleash him. “Time is a flat circle”. His death was real, when it happened, but when time caught up to present his death was prevented…
Deep thoughts…
We shall see what happenes…in time…