Anyone who’s been paying attention to Newsom for even a short period of time can confidently state that this claim is obviously false. Why? Because the left’s entire platform is predicated upon incoherence, and Newsom has been the most loquacious, if not mellifluous, purveyor of incoherence since he arrived on the political scene. Hence, anyone who proclaims that Newsom’s incoherence is due to having received a follow-up injection of goodness from the good folks at Moderna cannot be taken seriously.
According to https://noqreport.com/2021/11/08/gavin-newsom-had-major-adverse-reaction-to-moderna-booster-shot-sources/, Newsom “reportedly developed symptoms of Bell’s Palsy immediately after getting injected with the Moderna Covid-19 booster shot and has had trouble speaking coherently.”