When doing 100%, is it okay to reset the game to skip the credits after Dedede and Zero?

When Suzuri was doing 100% runs, he made a rule for himself that he wouldn't skip the credits, so that's what I did as well. In the rules, it's not strictly prohibited (just like how traditionally, everyone has done 1P for best ending), but I didn't even bother to check that resetting during credits still unlocks Boss Butch.

I know that resetting after Dedede unlocks MG5, but I don't know about Boss Butch.