Wrong, I care about a well written story. King could knock Big Mom off the surface she was standing on. If Big Mom would have landed on bomb she would have been taken out but that's not the type of story I want to read.
Think about how much better the story would have been if Law would have actually Incorporated the bombs into his plan to defeat Big Mom. Remember he was down there looking for the polygraph. Oda could have easily had Law noticed the bombs at that time.
Wano started out great and turned into a huge mess.