It’s probably not worth trying to understand why writers do the “research” they do. It’s likely it won’t make any sense outside their heads, so you’re better off not asking them to explain it to you.
My college roommate John, on whom this toon is based, clearly understood that. He knew when to just walk away and not interrogate his roommate as to why she was sitting on the fridge. Though he is a theatre geek and not really a writing nerd, creative types usually get this sort of thing about each other. He is now a successful producer.
The events depicted in this comic are in fact based on reality and there is photographic evidence. I frequently ate my breakfast while sitting on the fridge because it was something one of my characters liked to do. My roommates learned to ignore it. (Don’t ask what was going on with my early college hairstyle. That was unrelated to my writing.)