What a bad-faith take. Technically, no, twitter's statement is not a fact about the future, but merely a fact about California's policies. In the utmost of pedantry, it should read "According to California's election policies, ballots are only to be sent to registered voters at the addresses listed on their registration."

But if we're really drilling into semantics, you posted a link about dead people on the registry. That does not, in fact, preclude twitter's statement. Hundreds of dead people have active voter registrations! Twitter's statement is not invalidated by this.

But neither does it support Trump's claim about "significant" voter fraud. Hundreds of votes in the state of California is neither significant, nor guaranteed that the dead people's ballots will be used.

But Trump's claim is that ballots will be sent to everybody in the state. That's a far greater lie than your overwrought interpretation of their statement.