Earlier quoted context omitted.
Proper applications follow OS UI conventions, they appear in the task bar, are launched from the application launcher etc. Proper applications can also be sandboxed, though Spectre makes it a bad idea to run untrusted code anyway.
> Proper applications follow OS UI conventions (I'm going to ignore the use of "proper application" instead of "native (non-web) application"; it isn't helping your argument.) Native applications can choose whether they follow UI conventions or not; many games don't, for instance. Web applications have the same choice; they can use native controls provided by the browser, and I certainly agree that well-behaved web a…
macOS certainly has one.