There isn’t even an agreed upon definition for what consciousness is from a scientific perspective.
Consciousness is largely a way to have a reward function for set of behaviours that keep you alive through reason.
It appears at a level where reasoning is intelligent enough that you need a more complex reward function.
It seems that not everyone values the having of a consciousness as something special. Survival works pretty well with a good appetite, some muscle for clobbering enemies, and a good sex drive. How does (thinking about) consciousness add an advantage here?
To me that is exactly the same as saying "the devil made me do it!"
i.e. both things are euphemisms for "I'm not accountable for my actions"; "I'm not at fault"; "It was beyond my control", etc.
And if you truly believe there is no such thing as free will and that everything is predetermined, then you'd have to agree. Hitler can't be held accountable for his choices; his actions were all predetermined and his fate was sealed at the big bang; he just got an unlucky "initial state".
As for the free will, it means that the behavior of a molecular machine depends on machine itself, not on far away stars or a random number generator. One can't say that he got unlucky initial state, because he _is_ that unlucky state. Any change of the state would create someone entirely different. Moreover Stephen Wolfram's computational irreducibility principle implies that despite all the information being contained in initial state, only way to extract predictions from that state is to run the molecular machine and observe its behavior.