It is sort of a confession that they're unable to consume an entire cultural medium because despite being an adult they're incapable of sitting still for an hour. I have ADHD myself but even I can manage that.

Again, not a confession. It's commentary.

Do you know what a confession is? It's admitting something you feel guilty or ashamed of. I think this qualifies in the same way that "I dont read novels, just wikipedia summaries of them" would.

I understand what you think, I don't welcome you telling me.