This is outdated and suppose you are writing yet another bad page builder. Most argument apply to any technology that do not make a proper use of a component based architecture, code generation or static rendering. For instance Plasmic is adamant to allow compatibility with modern framework such as Next.js and even has been a pioneer in the field of static personalization, a very performant approach.
Indeed, I believe there's a lot of innovation to be had by page builders - Plasmic's approach is to blur the lines between the codebase and the visual editor, so we try to directly confront the myriad issues laid out by three OP.
