"Ah, pushing all of them may be a bad idea.."

For the exact reason he's thinking. Maybe it'll just go more haywire if it gets that many commands at once.

"There's probably one button that could turn it off, but I have no idea which of these it's supposed to be.. There are so many of them! Yoite-san, do you have a good feeling about any of them?" What do you think he is, Madoka, a living on-off button dowsing machine?