Apart from regulating social media, which a lot of people will say is censorship, I can't think of much else.

We can, however, negate the benefits of using social media to spread misinformation by making it a criminal offense for politicians to knowingly lie or misrepresent the truth. This limits the damage they can cause.

Also, extending that to social media influencers, and the media in general, would make sense.

As for who decides what is true, that would be up to the court system.

"They" don't want you to stop, they want you to step in line. The machine will do the thinking for you.