Agree with the wrong ratio, and the explanations I can find are two: 1) When starting a project, product people always exaggerate the scope, so tech people set

Agree with the wrong ratio, and the explanations I can find are two: 1) When starting a project, product people always exaggerate the scope, so tech people set it up for scaling from day 0 2) React is industry standard, so it's easier to say "here, this is a React component, you know how it works" rather than re-inventing your "component" pattern that mutates the DOM. That said, complexity is a spectrum: scaling up and down is equally painful. Understanding how to calibrate efforts comes only after a lot of experience.