That's 5?
5 on my device is way lower than that. No way I could read on 5 on mine in total darkness.
My screen is otherwise pretty uniform. But not as bright as that.
If anything, my complaint is about fonts being 'washed out'. Comparing to some other units I have seen, my fonts are not very bold. But I thought that was a problem with the brighter units, not with the less bright ones.