Your browser must have messed up on you. There was a video link in my post. But your reply doesn't seem to have it and its website listed. Maybe you should try a different browser. Or maybe even a different IP.
I watched about 10 minutes of it. The author seemed to believe that because he found a lot of news articles related to coronavirus that had the number 400 or 400,000 in it that this was all a fake conspiracy. Problem is there are lots and lots of news articles about coronavirus and search engines are good and matching words and numbers so the same conspiracy strategy will work for other numbers too.
The 500, 500,000 conspiracy.
N.J. to receive 500 more coronavirus test kits
https://www.nj.com/coronavirus/2020/03/nj-to-receive-500-more-coronavirus-test-kits.html
Britain and Vietnam confirm new coronavirus cases, death toll tops 500
https://www.cnbc.com/2020/02/06/coronavirus-latest-updates-china-hubei.html
At least 500 Wuhan medical staff infected with Cronavirus.
https://www.scmp.com/news/china/society/article/3050077/least-500-wuhan-medical-staff-infected-coronavirus
Lockdown! Government ready to limit sports crowds to just 500 PEOPLE if coronavirus outbreak escalates
https://www.dailymail.co.uk/sport/sportsnews/article-8084251/Government-cap-sports-crowds-just-500-coronavirus-escalates.html
The CDC has tested fewer than 500 people in the U.S. for the virus.
https://www.fiercebiotech.com/medtech/new-california-coronavirus-case-reveals-problems-u-s-testing-protocols
Coronavirus: Expert's worst-case scenario is 96 million infected in US with up to 500,000 dead
https://www.independent.co.uk/news/world/americas/coronavirus-dr-james-lawler-warning-us-hospitals-infection-a9385031.html
Deadly coronavirus could infect 80 per cent of Brits and kill 500,000 in worst case scenario, document reveals
https://www.thesun.co.uk/news/11041657/coronavirus-could-kill-500000-brits/
Coronavirus May Infect Up to 500,000 in Wuhan Before It Peaks
https://www.bloomberg.com/news/articles/2020-02-08/virus-outbreak-in-wuhan-may-soon-peak-with-more-than-5-infected
Massachusetts Awarded $500,000 in Initial Federal Funding to Combat Coronavirus Outbreak
https://framinghamsource.com/index.php/2020/03/06/massachusetts-awarded-500000-in-initial-federal-funding-to-combat-coronavirus-outbreak/
Search engines are powerful tools. I got bored and stopped after the first page or two but the list above could have easily been much much larger.
I did not recopy your link because I felt it was misinformation. Your original post is immediately upthread for those so who wish to watch it.