This is a cheeky response to one too many recent developments in prototyping tools that show off—with high energy music urging breathless anticipation—the ability to create and organize rectangles.
As a web-framework the presentation of a React component is still accomplished via HTML and CSS; a set of mechanisms built to present text documents in different shaped windows. As such, any React-based WYSIWYGish editor, despite building on contemporary hotness, will have similar tool-design challenge as Dreamweaver did in the 90s— allowing designers with an objects-in-space mental model to create procedural layouts. (The complexity of the problem has only grown as web standards have included layout systems (flex-box, grid). )
So long as we need to accommodate variations in screen sizes and our underlying procedural layout technologies churn, we’re going to have new tools competing to address the same problem—organizing rectangles.