Sons and Daughters sucks and is sadly the weak link in the six-episode arc.Wow brief this week and they didn't have much positive to say about Sons and Daughters but fair enough really!
It's extremely shitty how the writers just decided to up and ignore Alexander when Worf joined the DS9 crew and then a couple years later were like, "oh, right, Alexander. I guess we should acknowledge him somehow." And the only way they could do it was to make the show's ignoring Alexander a plot point thus turning Worf into a huge gigantic a-hole.
When Alexander says, "You abandoned me," Worfs rejoinder should have been, "Well, that was really just the writers."