I would like to find out how your friend has come to trust the sources he trusts, and then why he keeps trusting them even when they have obviously been fundamentally wrong in the past.
For example, Reuters did a background piece on Yeadon:
Article: In October, Yeadon wrote a column for the United Kingdom’s Daily Mail newspaper that also appeared on MailOnline, one of the world’s most-visited news websites. It declared that deaths caused by COVID-19 ... Read even more