I find your feelings on exposition and laugh tracks fascinating. That you interpret them as insults is interesting yo mr. If anything I would take them as the opposite, they're not confident enough in the joke or their ability to convey information adequately so they're compensating for their own shortcomings.
The star wars example is indeed interesting because it only becomes a lie retroactively. When it was written Vader was not meant to be Luke's father, so I would argue it's still exposition.
And I'm counting things as simple as "go that way" or someone introducing a character's name, be that their own name or someone else's as exposition, even in a larger dialogue.
