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.
And that goes doubly for the use of the term "deadbeat." That term refers to someone who avoids paying debts, or to a sponger or idler. It makes absolutely no sense to apply it in this context. It's not like the Siskos live on 20th-century Earth where the family depends on the father's income for survival. They're in a moneyless economy. Sisko doesn't owe his family any financial debts; the only thing that's at stake is whether they have his presence and companionship. So "deadbeat" is an anachronistic term and a ridiculous one to use in this context. It's as absurd as calling him a Bolshevik or a Mugwump.