Note that I wasn't savescumming, I was using the game's built-in "cheat death" option. One non-death per character level would come to 50 non-deaths, which is probably less than it took to win even playing very lazily with unlimited saves.
I think of I played in such a mode, I would either play exactly as I do (but win every game and lose interest), or develop bad habits while my life is protected that persist while it isn't. In that case I would lose much more often.
I don't think I would be interested in playing that game. If I'm going to cheat to get infinite lives and an unlosable game, I'm going to do it right.