We do try to emphasize that it's completely up to you how much or how little state you actually put into Redux: https://redux.js.org/faq/organizing-state#do-i-have-to-put-a... .

I've certainly talked to people who literally put every single value in their app into Redux (often in conjunction with _only_ using functional components). I can understand why they might choose that approach, but to me that's over-opinionated. Most of my app-type data does go into Redux, but it's absolutely fine to use React local component state for whatever doesn't need to be shared.