I am surprised how many people I interview say the same thing - pure JS has to re-render the page and React doesn't, including people who have a lot of JS exper

I am surprised how many people I interview say the same thing - pure JS has to re-render the page and React doesn't, including people who have a lot of JS experience. Changing the DOM doesn't cause a full re-render, the browser will optimize the repaints to only the parts that have changed. People don't understand how the DOM works, and its become a great way to filter out people.