Yes but it’s not good enough for privacy for many users, as it requires a phone number to set up an account.

Actually some search engines like duckduckgo and brave use this method, where the ads are only based on your query (so when you search for ‘bank’ you will get ads for banks). I think this is the correct way to advertise.

What other comments mentioned, and also, https://tosdr.org might be a good tool. It summarizes terms of service and privacy policy into a few sentences.

Source? Can’t find it on their website

I created protonmail with temporary email, (fakermail.com), or with recaptcha (works with VPN but not with TOR.