Actually I described the thing wrong. I forgot how it really was.
The system is that you need a VKontakte (Russian Facebook) account to use PornHub. To create a VKontakte account you need to verify your real identity with your phone number. The only way to get a phone number in Russia is via official ID and the phone number is registered to your identity.
Go ask the Japanese what happened when they tried to regulate peoples sex lives. It led to incredibly repressed generation of people and low birth rates. This is INSANELY stupid.
Yeah... no, its not. In Estonia verification is done using id card reader (used to be given for free almost a decade years ago when whole thing started, now it costs few euro). You need to put in your id card and enter pin code. When you are done doing stuff, remove id card from reader. That is used for accessing any online government websites and for banking.
Don't confuse phone verification done by third parties with actual government verification.