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But the “various values” are sent, like you mention user agent, etc. I wonder if it makes sense to have a browser that doesn’t send all of that.
That’s the tricky part. If you just don’t send anything then they’ll use THAT information to profile you, because no one else is doing that.
Also it can cause the page not to load properly.
So what most browsers do is spoof the information such that every user of that browser is sending the same information, when possible, regardless of whether it’s accurate.