Because there have been millions of unexplained sudden deaths worldwide in the last 18 months. Younger, healthy people suddenly dropping dead with NO explanation, NO autopsy and NO justification for the cause of death on the certificate. Or just something vague like “cardiac arrest” or “cause unknown”. NO causes are found. This is a massive unexplained change. Healthy young people DO NOT DROP DEAD SUDDENLY. The only randomly distributed common change in the world has been mass mRNA vaccination. No other rational possibility has yet been offered.
Meanwhile increasing evidence points to cardiovascular and cardiopulmonary damage done by the mRNA vaccines.
Therefore unless a rational explanation for an unexplained sudden death is provided it’s highly rational to invoke the mRNA vaccines. This is not a complicated explanation. Do not pretend you do not grasp it. If you can refute it, go ahead. If you can offer an alternative explanation, go ahead. The world is waiting for just such things.