Definitely agree with you in terms of limiting functionality built on top of WYSIWYG UIs. 2 years ago I developed a non-trivial app using Retool and it became an unmaintainable spaghetti monster "code" base. (Side note: Retool was pretty solid, my application was just way too complex for it)

The result was I wasted 6 weeks of time when I should've just spent 2-3 days prototyping and then throw out the tool once I had a good idea of what we actually wanted. In the end if didn't matter since the project died anyways :/