@Danger Tuna I think it does makes sense for me since it explains why the seme is so fond of the uke and his reason for having an odd behavior. It somehow shows who he is and his ulterior motive to the uke. Maybe the author just wants to portray what really happened in the past events. I get that it's seems boring to understand but I tell you flashbacks sometimes are real boring but crucial. Maybe stories like this may not be for you so if you are annoyed with the author's way of writing, then you should've dropped it instead of wasting your precious time getting stressed to something you're not into.
I am literally everywhere