Well if you are trying to be a good dad, and it shows, no, of course you are not.

Elon Musk could have stuck with his wives and not separate. But none of his marriages were sanctified by God, so he separated.

First I said that he is not that much of a great father, but not a complete "deadbeat", hence, at least he shows he tries to be a somewhat good father. The issue is twice he didnt try hard enough for his children. I dont know the circunstance of his separations, but he consented and didnt fight for them; as difficult as it is, a father must fight for his family, for the sake of his children, despite of the shortcomings of his wife.