This might just be Mr. Jiobaf's most authentic inner portrayal at the moment.
He had been married when he first came to the Federation, and even after his children had grown up, he never thought about marrying into a local "family" because at that time, his understanding of the Federation was only superficial—just work hard, and you are bound to rise above.
By the time he started to understand something, it was too late; over these past decades, he increasingly felt constrained at every turn.
And now, Lance, a... he wasn't sure if Lance was yet twenty, was talking about his upcoming marriage into a local family.
This made him feel like he had lived his whole life as a dog.
"I...", he wanted to say something, but he was on the verge of an emotional breakdown. He forced a smile at first; he had meant to congratulate Lance, but he couldn't maintain a natural smile due to his emotions, so he reverted to his usual, even slightly indifferent, expression.