N95 masks and ventilators were largely depleted in 2009 and the Obama administration did almost nothing to replenish:
https://www.pbs.org/wgbh/frontline/article/depleted-national-stockpile-contributed-to-covid-ppe-shortage
Trump did not say Covid-19 was a Dem hoax. He said the Democrats' criticism of him was a hoax. (As an aside, why do you consistently get details wrong?)
As for "criminal negligence," Trump gave the Great Fauchino the megaphone early and often. No one didn't know how bad the virus was.
As for HCQ+, the fact that major health systems don't and didn't use it is a great failure and a damning testament to the Great Fauchino's influence, who single-handedly caused the deaths of over 500,000 Americans (per Dr. Risch's excellent research) because he falsely said HCQ+ didn't work when it most certainly did. And there are thousands of people alive today who otherwise wouldn't be because their doctors did use HCQ+, such as Dr. George Fareed.
I don't expect you to read this link (although you hypocritically insist others read your endless ones), but Dr. Fareed lays out a great case here on why HCQ+ works.
Link: Fareed Open Letter to Great Fauchino