Ok So it isn't Adam Taggart who writes the column but his business partner.
From Mother Jones website.
"One popular series on the virus is produced by a personal finance guru with a history of pushing economic theories about peak oil and other resource crunches, but who has recently rebranded as a pandemic expert as news coverage of the virus has exploded."
"While Martenson calls himself a scientist in the video’s titles, his claim to the label is, according to him, based on a 1994 PhD from Duke’s Department of Pathology where he specialized in toxicology. While he published scientific research in the ’90s, for at least the last decade Martenson has focused on predicting stagflation and other large shifts in financial markets."
"In the four days since that video’s release, Martenson has uploaded six other coronavirus videos that, together, have amassed over a million views. A social media analytics website, Social Blade, shows a spike in new subscribers—in a radical jump from his normal rate, he earned over 12,000 in the past week. "
https://www.motherjones.com/politics/2020/02/coronavirus-youtube-creators/So nothing recent then, but it does explain your gloom and doom scenarios.