Ask HN: Why use geolocation instead of browser language settings?

When I'm in Germany, I frequently find websites that display English in the UK that display text (especially cookie pop-ups) in German even though my browser and system language settings tell the website to use English. I would understand this if it were significantly easier to find a user's location from their IP address instead of use their browser settings, but it is clearly not - the language setting is there in the header of every request my browser makes to websites.

Is there some benefit to this practice from the point of view of website developers?