I think it was related to a bit of misunderstanding, aiqiyou resigned from the authors to apologize to the author of the previous submission. And though it's unfortunate that it had to be rejected, I think no hard feelings remain, so there's really no need to be too hard on oneself. An improvement has been made, and the authors deserve credits. I would agree that forced co-authorship was unnecessary, as I believe we would be able to convince aiqiyou to return :)
Warning: When making decisions, I try to collect as much data as possible before actually deciding. I try to abstract away and see the principles behind real world events and people's opinions. I try to generalize them and turn into something clear and reusable. I hate depending on unpredictable and having to make lottery guesses. Any problem can be solved by systems thinking and acting.