The Balance brought to the Force in Return of the Jedi was undone by The Rise of Skywalker's answer to Rey's lineage.
Kennedy was against doing anything of the kind with Obi-Wan due to what George Lucas had established, so anything to do with Obi-Wan was off the table.
In an interview with Vanity Fair, Lucasfilm President Kathleen Kennedy explained a connection between Rey and Obi-Wan was avoided due to the Jedi Code against attachment. The "my baby girl" meme is a result of the leak of details of the first meeting between the characters. While there are plenty of questions about how that decision was reached, the head of Lucasfilm has explained why a Kenobi relationship wouldn't have worked.
The Rey fiasco can be linked to the lack of a plan for the sequel trilogy, an unfortunate reality fans will have to live with. After The Last Jedi closed the book on that part of the character's story, discussions continued after The Force Awakens mentioned multiple possibilities. At one point a connection to Obi-Wan was strongly considered by the creators of Episode IX. If that was true, then the door would have been open for Kenobi's family to continue, even if Rey came into the picture. The Jedi admitted he'd left the Order for her if she'd asked him to.
Kennedy's commitment to honoring George Lucas' philosophy is reassuring, though Palpatine's return and Rey's connection to him messes with completely different aspects of what The Maker infused into his saga. Kennedy and Lucasfilm seem to have learned their lesson, as there's a road map in place for the future of the franchise on TV and in theaters.
Some have suggested that Korkie could be the secret child of the Duchess and Jedi, as he is present in Clone Wars. The similarity in her fighting style to Sidious was noted by others and they went to the dark side. You are impacting the rules around the Jedi in order for Obi-Wan to have a child.
Kennedy is hesitant to make creative decisions that alter the philosophy of the Jedi. The Jedi's voice was present in Rey's Force-back vision and some fans thought she was a descendant of Obi-Wan. In The Clone Wars, Obi-Wan had a relationship with the Duchess of Mandalore when he was protecting her as a Padawan. The Rise of Skywalker retconned the hero into being the granddaughter of Emperor Palpatine. He is meant to be the lone exception and his attachment leads to selfishness and his downfall. That is a significant part of the mythology of the Jedi that we wouldn't want to mess with.
Kennedy is correct that the Jedi Code forbids attachment, leading to a scenario where Obi-Wan having children wouldn't make sense.
During The Rise of Skywalker's production, Rey wasn't always related to Palpatine. Kennedy's comments seem to dismiss the possibility, shutting down any theories of Obi-Wan parenting an unknown kid. Star Wars will once again thrive if there is no such whacky creative scenarios like the one in question.