Do you have any information about what problems this is expected to solve?

WebView2 is shipped/serviced by Windows (auto-updates with Edgmium at roughly the exact same pace as Chromium/Chrome), and it's a shared control with a single install which Windows can optimize memory usage/performance. As opposed to Electron packages its own Chromium, updates have to be shipped inside the application at the application's pace (including and especially security updates), and the install size and memory usage/performance is bloated for every Electron app bundling lots of the exact same Chromium DLLs and whatnot.