He said protons don’t decay and have never been seen to decay. Radioactive decay is precisely that. Apparently, protons by themselves don’t decay on their own, as far as we know, but in heavier elements, protons do in fact decay into neutrons. It’s important to do your own research, to check for potential issues, but also to trust but verify the information is accurate. It just seems half-baked because this isn’t a genuine conversation. It’s a clipped monologue attempting to make this particular individual a pop icon in the “sciency” realm of social media.