I’m thinking about how delighted to meet Bashirs parents Captain Sisko was, because family means everything to him and because he incredibly proud of his crew. Sisko clearly automatically thinks of family in a positive light, and presumed that bashir would have a good relationship with his parents, and be glad that theyre there to visit. He was so excited to learn more about Bashir’s childhood, and his parents lives, and what he did before he was on DS9. It must have been so shocking and disappointing to him that a parent would not accept their child, and would alter them to fit their own expectations rather than loving the person they are. Sisko had expectations and ambitions for Jake, of course, but ultimately when Jake went against those expectations, Sisko accepted him wholeheartedly. I dont think that theres anything that Jake could do or be that would make Sisko want to change him, bc fundamentally, thats not the kind of man Sisko is.
I imagine that after all the revelations from that ep, that evening he talked to Jake and told him that he loved him, and was so so proud of him, and would accept him no matter what. And I think that knowing what Bashir went through, Sisko would be all the more proud of him, as his captain and as his friend.
Sisko, quietly, to himself, watching Julian shortly after his parents leave the station: I’m your father now.