As someone who runs a site with alot of content I respecfully disagree Luca. The markdown editor is not overly non tech person friendly. When i switched to the editor, i cant explain the excitement from my content creators. There is nothing you cant do with the editor you can do with the markdown field (in fact it has a kirbytext block). They now have ability to easily create galleries and timelines, and I have block requests coming in from them so many more blocks on the way.
By making core, many more newcomers to Kirby will be exposed to the much improved content creation ability it offers and the great plugin coming out.