macOS needs different design paradigms than iOS does. With Marzipan, Apple is proclaiming to the software development world that these paradigms have merged, that it’s fine to slap a touch-first interface on a mouse-first device. But that is not fine. Even if it’s acceptable to many users, that doesn’t mean it’s good.
The Mac needs Mac apps, not iOS apps. Marzipan apps are not Mac apps, they’re iOS apps. This is not a bug; this will not be fixed. This is a decision by Apple to ignore what makes Mac software great and to treat its most robust platform as a scaled-up edition of the iPhone.
The Marzipan apps that Apple has shipped so far are about a half-step better than Electron apps. They are interesting experiments; they are bad Mac apps that should not have been shipped to users. If this is what Apple expects developers to produce, I am not looking forward to where the MacOS software ecosystem is heading.