The quoted portion actually reads antigen, not energy. "You can't control the amount of antigen that everybody is getting," he said. "When you give a vaccine, you want to know exactly how much antigen is because some people react very, very badly and can get very, very badly injured."
It said energy at first bsky.app/profile/melo...
Fair enough. That makes sense. This platform doesn't appear to allow edits, while the source article has apparently been updated. People in the comments may not have read or seen the text based on replies. It's still factually incorrect & ignorant, nonsensical blather from RFK Jr, either way.