Exceptional claims should have exceptional proof and starting off with "explains everything" is simply clickbait. If you want a scientific, non-sensational overview of how research is going on the Covid front, I suggest Derek Lowe's blog instead [1].
The article was a very well written lay reader summary of a couple of recent papers offering a different perspective on what the core mechanisms in COVID-19 might be. Even the title didn't claim to "explain everything" and the body of the text certainly did not.
The article title on HN has been editorialized to be more reasonable, on Medium the article's title is "Coronavirus May Be a Blood Vessel Disease, Which Explains Everything".
Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that."
