No, they’re saying that they would use the built-in ZIP support if it was performant enough. Since it isn’t performant due to design limitations, they have to use 7zip.

I'm saying that approximately everyone cares about performance of this, or other functions of the OS. I'm using 7zip, even though I would prefer not to, but this is me solving the problem for myself. Most users are not capable or not in a position for this kind of self-help, so they're just silently suffering through.

It's amazing how two people can make the exact same argument, yet argue as if they had opposing arguments.