"Blocking Non U.S Countries and Devices" so instead of making a WORLD wide website, you'll make your site to be seen only by the people in the US that haven't adopted yet a measure to defend themselves.
Also I would strongly say these practices are unethical.
The reason why GDPR laws have been made is to protect the user from the selling of their data against their will.
In case it wasn't obvious; everything in this post is unethical, it's a satirical take on the unfortunate real world practices that are everywhere in the industry.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.