What would be a good reason to ask for confirmation to create a new save in a game?

I just got the PS4 of a friend and noticed that many games use the builtin save manager.

What bugs me is, that the manager asks you if you are really sure you want to save the game, even when you chose to create a new save game, so there is no way to lose any existing data. It even asks you to confirm, that the save game has been created, which should basically always be the case.

Limited disk space should also not be a concern, when a save game is only 10 MB in size. And even if it was huge, it would only fail, not damage anything.

I'm wondering, what this check is meant to prevent, that makes it worth to include an additional interaction, that is, I would say, unnecessary in 99% of times.

The only thing I can imagine is preventing an accidental creation of a new save, but I don't see the problem in that either, since you can always overwrite another one again, from the same menu.

Combined with the slow screen transitions it makes this feel incredibly sluggish.