This is fear mongering absurdity.
Why didn’t fear of myocarditis stop them before? There is absolutely ZERO evidence that this extremely rare condition, which can occur after many types of different viral infections, occurs at any greater rate.
Its a risk in most major viral infections, albeit a small one.
From the Mayo clinic:
“Often, the cause of myocarditis isn't identified. Potential causes are many, but the likelihood of developing myocarditis is rare. Potential causes include:
- Viruses. Many viruses are commonly associated with myocarditis, including the viruses that cause the common cold (adenovirus); COVID-19; hepatitis B and C; parvovirus, which causes a mild rash, usually in children (fifth disease); and herpes simplex virus.
Gastrointestinal infections (echoviruses), mononucleosis (Epstein-Barr virus) and German measles (rubella) also can cause myocarditis. It's also common in people with HIV, the virus that causes AIDS.
- Bacteria. Numerous bacteria can cause myocarditis, including staphylococcus, streptococcus, the bacterium that causes diphtheria and the tick-borne bacterium responsible for Lyme disease.
- Parasites. Among these are such parasites as Trypanosoma cruzi and toxoplasma, including some that are transmitted by insects and can cause a condition called Chagas disease. This disease is much more prevalent in Central and South America than in the United States, but it can occur in travelers and in immigrants from that part of the world.
- Fungi. Yeast infections, such as candida; molds, such as aspergillus; and other fungi, such as histoplasma, often found in bird droppings, can sometimes cause myocarditis, particularly in people with weakened immune systems.”