I have the same problem in 2025. I've noticed that by turning extra dim all the way up on a slider I can help make it bright enough. Rebooting also works. If I turn on night light that will update and extra dim will turn off if it's set to off. Also, vice versa: if I turn night light on, the screen reddens as expected. If I turn it off, nothing happens. But if I turn on extra dim, then it will apply extra dim and finally register that night light has been turned off.
EDIT: I have had this problem for months.