There's an analogue here with programming language iteration— Python, Ruby and friends showed what the semantics were that were needed, and then a decade or two later, Go and Rust took those semantics and put them in compiled, performance-oriented languages.

Electron has been a powerful tool for quickly iterating UIs and plugin architectures in VSCode, Brackets, Atom, etc, now the window is open for a modern editor to deliver that experience without the massive memory footprint and UI stalls.