@efi I would like to send it a link to a good explainer, but it is written by a banned organization so it is illegal for me to do so. In short:
If you have > 10000 subscribers, you must register and provide the personal info.
After registration you are forbidden from swearing, posting porn and disinformation. You will also face consequences if you repost someone who is not in the registry.
If you do not register or fail to comply with the new rules after registration:
— You can't accept any donations
— Advertisers are forbidden from working with you
— The social network will have to ban you

There are no consequences for people with <10000 yet, but it is still considered illegal.