What is the meaning of tier S, A, B … If i sound dumb then 🤷 eli5 Thanks

According to me vpn don’t stop fingerprinting. If i am wrong then please correct me.

Thanks dude tobprovide immesme knowledge.

I’m not very good with technology, so I don’t understand most of what you’re saying. Could you explain it simply, as if I were five years old, how we protect the FOSS community and stop Google to pressuring us.