I see your point – it's valid, but perhaps a bit overgeneralized. Let me explain.

You don't wear a balaclava to walk down the street just to avoid being seen – you still share some minimal data with the world, like your appearance.

Similarly, on the Internet, some minimal metadata is inevitably shared, even if you're privacy-conscious.

So a genuine question is: what do you consider acceptable "minimal data" to share with websites? None?