Hades did not particularly care about the semantics of child rearing as it related to arranged nuptials, but he loved Hera enough to feign a mild interest, and suppress the urge he had to pretend he had fallen asleep.
When she ended with her self endorsement, it became even harder for Hades not to roll his eyes. His darling sister got more humble each time they met. The next time they were reunited, which could easily be as soon as the next century or two, Hades was quite sure that “Modesty” would be added to Hera's list of patronages right next to “Subtlety” and “Tact.” He'd caught what she was mortaring between the lines with her trowel. How could he respond to the actual lines anyway? Thank you, and if someone you care for meets a tragic end, don't worry, I'll take care of it?
Hades sighed. “The reasons I called on Zeus and did not call on you about Persephone had nothing to do with how capable I think you are as the Goddess of Marriage.”
There was no goddess more qualified for arranging other peoples' marriages than Hera. She was good at it. Hades had been sure of this even before she'd demonstrated her talent that day. By sheer stubborn will alone, his sister could be the best suited for anything that she wanted. When told that the sky was the limit, Hera took the heavens.
In normal circumstances, if the King of the Underworld had decided it was time to settle down and find a queen, the Goddess of Marriage would have been the first one consulted. But in the circumstances with Persephone, Hades felt that a meeting with Hera wouldn't have helped him and his reasoning behind choosing Zeus in that instance still held up.