[dgb23]

This feels slightly misleading.

Step 3 is where projects end up when they grow sufficiently in complexity and/or features (React specifically is not a necessity but a good solution).

The problems that are being looked at by many of these frameworks, are pushed by the need of being able to use the same rendering and logic, tooling, language and so on for different stages of complexity/requirements.

These are real issues that people worry about and try to find solutions for. On the grand scheme of things these developments are about reducing pain and cost, while keeping up with or driving advancements in user (read: client) expectations.