Nobody takes this seriously. Gab is a haven for extremists, including neo-Nazis, white supremacists, white nationalists, the alt-right, and QAnon conspiracy theorists. it has attracted users and groups who have been banned from other social media and users seeking alternatives to mainstream social media platforms.
Hardly a source to get real news on anything.... In their desperation to discourage vaccinations, anti-vaxxers here will dig out all kinds of crazies.