Every country is sovereign in its territorial. This means that they can:

• confiscate actives in japan
• to pass fines
• to ban the access to the servers
• to ban the operations on its territory
• to jail the company’s representative of the country
• etc etc

As an example the EU did exactly this when the gdpr came into play

Most of those moderation just step in the moment the lie enters the chat.

And no, you freedom of speech does not allow you to lie without facing the consecuences