One thing is using information about my connection like my IP and a different one is my browser exposing the angle that I'm holding my phone.
I should be able to expect some privacy from my device. What if my browser starts sending a picture of my front camera with every request, is that okay?
No, that wouldn't be ok, but if my browser did that, I wouldn't be mad at the website for doing something with the data I sent them. I would be mad at my browser, not the web site.