CH_ASUSI think its 1100 nits peak brightness for zenfone 8
Also keep in mind it is summer period for a lot of countries now. Meaning more time outside, more sunlight.
Zenfone 8 has HBM up to 800 nits which triggers for outdoor sunlight readability. This consumes more power of course. (And not different from other brands with bright screens).
It might not be discernible as "brighter" because if you are outside, the ambient brightness is also very high - but it will be noticed in terms of display power draw.
HBM can trigger in Auto and in Manual (when brightness is at max).
martinparker28Valid point. If someone does nothing but watch videos and such they would be much better of with something like a samsung F62.
Then why spend so much money on a flagship phone?, most mid range phones will give you the settings you've described at a fraction of the cost, while people keep setting their devices to power save mode ,lowest refresh rate etc then the manufacturers will keep ignoring ongoing issues with battery life etc.