> Any cocoa app use that much of memory.
What gives you that idea? Lots of apps have cruft, but that's nothing to do with Cocoa.
A "Hello, world!" in Cocoa uses around 13 MB, and the application bundle weighs in at 79 kB. The fact that Electron uses a bare minimum of over 100 MB just to get an application running is a source of some understandable consternation.