As long as the sources can be checked, challenged, and counter-opinions can be voiced, I personally don't think it matters that much. It's the blind acceptance of statements and accusations that match our existing world view that we need to combat, I think.

Moreover, twitter has demonstrated its inability to do this already. From their repudiation of the claims made about mail-in ballots:

>Trump falsely claimed that mail-in ballots would lead to "a Rigged Election.

We don't know if the claim is false; it hasn't happened yet. It could have said unlikely, improbable, whatever. Making this statement, however, is just as charged as the one it opposes.