The additional benefit of this approach is that you can then build your application such that it works with all standards-compatible browsers, such as Firefox.
That's not a benefit - that's a down-side. When writing a front-end for Electron, you only worry about 1 browser and you have a guarantee that it will work the same way across every OS.
If you have to write a front end (website) that works with more browsers, you have to put in moro work.
If you have to write a front end (website) that works with more browsers, you have to put in moro work.