[systemvoltage]

SPA is a poor approximation of a native client with a hugely bloated browser stuck in some level of the abstraction, bypassing native app libraries, design sensibilities, typography guidelines and accessibility by implementing some UI framework that was developed by people that are entirely unqualified for it. Have you looked it the guidelines for UI development, say for MacOS? Here you go: https://developer.apple.com/design/human-interface-guideline...

PWAs, browser apps - they bypass all this work from professionals and give it in the hands of an unequiped developer. Oh god.

A browser is a window, an area of the screen that is allowed to do whatever it wants in a sandbox mode. This is a terrible idea. It becomes complete wild-wild-west.