Oh yes, and let's not forget shortwave radio. That's widely listened to. They could use that to get their messages out to the population! Twitter and Youtube are the defacto platforms available to the public and they have been increasingly censoring conservative content (aka "wrongthink").I watched several live feeds yesterday that were not censored.
Twitter is walking a dangerous path by suspending Trump's account, but there are other platforms... Parler (?) or others. Heck, reddit and the #chan ecosystem thrive.