Advertising, targeted or not, does not change the general public's ability to agree on facts or not, if indeed that ability exists at all.

If you're going to advocate for restricting free speech (by the state, no less) there had better be a great reason for it, not false claims like this one. It's a critical human right, not to be regulated lightly.

A vague desire for "cultural unity" is insufficient alone to start eroding human rights.