Unity launched in 2005. Electron released in 2013. Still, saying Unity would have been "better served" by using Electron is more than a little unreasonable!
Using a primarily JavaScript environment for primarily C# content sounds like an absolute nightmare to me.
Weirdly, when Unity was first starting out it had this "UnityScript" thing, which was javascript-but-not-quite. Luckily it's mostly been phased out (I don't think newer versions even support it)
Unity launched in 2005. Electron released in 2013. Still, saying Unity would have been "better served" by using Electron is more than a little unreasonable!
Using a primarily JavaScript environment for primarily C# content sounds like an absolute nightmare to me.