Most of us would be stunned for a few pages if we slashed someone who could barely move and then he started doing his motivational flirt or whatever it was right after it.
Part of me is starting to hope that we end up finding out the MC likes realist girls and ends up falling for Inori, for some extra chaos.
Don't think that is likely to happen at all though.
I think he saw it as proof of how hard she tried to perform mostly for him due to the special occasion. Iirc he is attracted not only to her clumsiness but also how hard she tries to overcome it.
The art in this chapter was really good. It must be a pain drawing Doben and the city and the artist didn't take the usual short routes when it comes to that, I'm impressed.
I wasn't expecting for everyone to simply ignore what happened in the previous page but well, I guess the author couldn't be bothered to go that far for his fanservice chapter.