Are we really trying to argue about cross platform GUI in 2025? This was solved decades ago. Just not in ways that are trying to directly appeal to modern webdevs by jamming a browser into every desktop application.
I don't even hate Electron that much. I'm working on a toy project using Electron right now for various reasons. This was just a bizarre angle to approach from.
You can't trust the system browser to be up to date and secure or for it to render things how you want. You can not guarantee a good user experience unless you ship the browser engine with your app.
Yeah sure but I use most web apps through the browser either way so I'm already in "possibly incompatible land" and you can reasonably expect any user facing device to have an updated browser OR one specific browser in case of embedded. We're not in Windows XP software distribution times anymore.
I get that you don't like it, so go build an alternative.