I disagree. I am no GTK fanboy but if you actually look through the linked tutorial it's quite straightforward stuff and all you need to know is C. You can't g

I disagree. I am no GTK fanboy but if you actually look through the linked tutorial it's quite straightforward stuff and all you need to know is C. You can't get much simpler than some of the early examples except maybe in Tcl/Tk. If you look through an Electron tutorial it assumes familiarity with a whole bunch of web technologies and it's not any simpler. The reason Electron and the like are popular is because developers can take advantage of their pre-existing knowledge of these web technologies and have the option to reuse code between Electron and web projects.