I don’t really care if you personally don’t believe it. By your logic, you shouldn’t trust anything you read on social media as it’s all unverified claims by random people on the internet.
This is what a local bus driver in Varadero told us last year. It checks out with the verified reports of protests against the government at the same time. It’s an authoritarian country so it could be possible that certain events are reported in a censored manner.