Oh, that particular quest is definitely not gracefully written. I was just surprised they went there at all.
I think that twitter thread is only half-right about how the game handles traffic. It's clear that they have very little AI. Maybe it's platform related (I'm playing on PC), but it definitely does not despawn stopped vehicles if you look away, though. I've parked just off the street and done entire side gigs nearby only to return to the exact same stopped vehicles 10 minutes later. This is... not necessarily preferable.
I want you to know that I really appreciate your posts in this thread. Please keep updating us. I especially would like to hear how they handle the trans bartender’s side quests.