It's amazing how much they dropped the ball during Covid. They already had everyone and everything in place! But the app is a buggy mess, far worse than Teams, and they just refused to do anything about it. I guess MS-internal politics? They had their own Teams and that was the preferred product?
That is why there are now Webview2 usage all over the place, and after 5 years WinUI 3.0 is still behind the WinForms, WPF and even MFC development experience, even though it should have been a plain port of UWP/WinUI 2.0 into standard Win32 infrastructure, so adding almost another 10 years on top (WinRT platform came out in 2012).
EDIT: it was actually 2012, not 2014.