> You don’t override screen resolution or color scheme with your own guess They absolutely do lol. Like it or not, people like you are outnumbered by people who set their Accept-Language header wrong and don't know how to fix it. Those people probably buy more too (or at least buy more that shows up in tracking, since you sound like the kind of person who disables cookies etc. too).
> Like it or not, people like you are outnumbered by people who set their Accept-Language header wrong and don't know how to fix it.
I challenge you to find one person that matches that description.