It apparently is allowed as this author will write articles attributing every adverse effect known to man to the vaccines.
It was known a COVID infection itself affected the heart long before vaccines were ever distributed. He doesn’t write articles saying that, nor does he mention this reality in his articles. Assuming for he sake of argument the vaccines were as horrible as he supposedly believes, that fact would be included in his articles if his purpose was to inform readers.
He’s a propagandist through and through.