A PWA it's a lot better. With electron, each app had their own browser as a dependency. So if you have discord, vs code, slack, notion, Figma, you basically have 5 versions of chrome installed (like 60mb each minimum).

Instead a PWA it's more like a WebView/Direct access that uses the main browser with some extra APIs that a webpage doesn't have, but that's it. It's a lot safer as you don't need to install another version of chrome