Yeah, this is a classic example where social media spreads falsehoods, including mistakes.
Here the exec is stretching the definition of the term gene therapy to include things that don't alter genes "mRNA vaccines are an example for that cell and gene therapy". He basically makes a mistake, because the same platform is also used for gene therapy.
To use a software analogy, just because both mRNA vaccines and mRNA gene therapies are software, doesn't mean that mRNA vaccines perform system updates (instead they trip the suspicious behavior detection of the anti-virus and trigger a download for new virus definition files).
Additional subtle distortion happens later on social media when people take this mistake and "shrink" it in the opposite direction "actually mRNA vaccines are NOT vaccines because they're gene therapy".
Joe Rogan then takes that and stretches it further to imply this is why the vaccines don't last long
> This is really gene therapy. It's a different thing. It’s tricking your body into producing spike protein and making these antibodies for COVID. But it’s only good for a few months, they’re finding out now. The efficacy wanes after five or six months. I’m not saying that people shouldn’t take it. But I’m saying, you’re calling it a thing that it’s not. It’s not exactly what you’re saying it is, and you’re mandating people take it
Sinopharm makes a COVID vaccine from dead / inactivated virus. Its used widely in China as well as in the developing world. We've also seen the same reduced antibody neutralisation there, and it isn't necessarily because of the passage of time but to a large extent due to the evolution of the virus to be significantly different from the original.
So yeah, this is a perfect example of how social media spreads engaging novelty - whether its deliberate disinformation or simply mistakes - and continues to distort it further by continuously applying stretching and shrinking. The info blob continues to evolve to evade people's "immune defences" and cause them to re-share it (e.g. retweet).
This is not something new, traditional media have been doing it for decades ever since the rise of the yellow press, with varying levels of subtlety. The difference is that this here is an "organic", crowdsourced process that yields better, more convincing results, as it has to defeat the "immune systems" of many people to get a good reach via resharing. Only the highest quality misinformation makes it through.
The worst bit about this phenomenon is that corrections don't work well. People who haven't heard the rumor don't care about the correction (its not interesting) so they don't share it. People that have heard the rumor before don't like being wrong, so they don't share it either. So it doesn't matter how many scientists explain the difference, the explanation will never have anywhere close to the reach of the original (likely hundreds of millions of people)