I wish people would stop using the lie that Sisko "abandoned" his child. If a soldier went overseas and was away from his family for years in order to defend them, no honest or fair person could call that abandonment. One can quibble over whether Sisko made the right choice, but it should be indisputable that he believed he was acting for the protection of his family. Calling it abandonment is a straw man and it corrupts any meaningful critique of the novel.
Of course it's abandonment. He might believe
that he needed to abandon them to protect them, but that doesn't make his actions any less abandonment. It wasn't just a matter of going away for years
, it was a matter of cutting himself off from them, not communicating with them, and ultimately deciding to unilaterally excise himself from their lives. How is that anything but abandonment?
Fair point about "deadbeat," though it's used colloquially to mean much the same thing as "ababdoner" in my experience.