Ok, I’ve looked at the source provided and don’t see an e-mail field either. The account e-mail is also limited to your own instance, correct? This thread was making me mildly concerned that e-mails were being shared when federating between instances.
Even if the fine were to reach half of what he spent on Twitter, he would have to pay them $687,000/day for longer than the average life expectancy in the healthiest country on earth (87 years). A billion is such an absurd number.