You certainly do not need to use a form library, but it does make it easier to deal with complicated issues such as render counts. I built a thin wrapper around material-ui and react final form (what I would suggest over formik) [1] and a little demo [2] that visually demonstrates this.

[1] https://github.com/lookfirst/mui-rff

[2] https://lookfirst.github.io/mui-rff/