You have Avalonia, Uno Platform and, yes, MAUI. Most cross-platform GUI frameworks are flawed regardless of the language. The ones .NET has are decent, with various ways to approach the UI wiring - you have both XAML and declarative SwiftUI-style (and with MVU pattern too) options. Avalonia even has F# support through FuncUI. There are also plenty of bindings for SDL2, there's GTK# successor Gir.Core.

I wish the comments focused more on the subject of the article which is interesting and under-discussed.