A few weeks ago, I was using my mothers PC. Google was erroneously in French, and no language chooser available. So I checked. Firefox sent a HTTP header with a Dutch preference. She was logged in with her Google account, which had a Dutch language preference. Some geolocation providers put her in Dutch speaking cities of Belgium. Still, the Google Algorithm had decided she would speak French. Plenty of other sites m…
Sites preferring geolocation over Accept-Language as a means of picking the language is one of my pet peeves. Preferring geolocation over a logged in user's stored setting is beyond absurd.
I seem to have to "change results to English" on google searches at least once a week when it forgets which language I've setup and used for the past ten years!