Who says every app has to run in a separate browser instance like with Electron? It could be as efficient as a browser tab, which would be perfectly fine as lon

Who says every app has to run in a separate browser instance like with Electron? It could be as efficient as a browser tab, which would be perfectly fine as long as the UI is built in a reasonable way. On Android it's been possible for a while to install webapps via the browser that are then displayed like normal apps on the homescreen, and that is nothing more than running a website in the single browser app instance running on the device.