I'd wager it's more likely he drives hazardously slow so the extra couple seconds viewing distance don't help him personally or there's always street lighting where he drives.
Edit: based on his commentary elsewhere it's almost certainly the former.
And I only chose 50 because it is definitely within the full stopping distance.
50 in a 55 is probably fine but "I never feel the need to use my high beams despite living somewhere rural" (I'm paraphrasing here) raises massive flags for "grandma, maybe you need to stop driving at night" type behavior and if you don't see this then that is an ever bigger red flag.
Also, wouldn't the opposite be true? If I feel fine driving with my lows on all the time because I can see fine, then my vision is still acceptable. Whereas if one needs 50,000 lumen ultra-high intensity high beams to travel down a well-lit boulevard, maybe those people shouldn't be driving at night.