I’m curious if anyone has any experience with going this route for building an app.
Historically "no code" products run out of steam at some point. I don't believe that has to be the case but, just as the Wright brothers discovered there were six degrees of freedom you need to control to fly, somebody is going to put the essential elements together some day.
Given that there is so much ferment you can learn more from attempting a prototype and taking the risk that you might have to make another prototype than you can from carefully studying the competitive landscape.