You and me both, brother. Everyone I knew in my friend groups had their masks up. N95s and P100s we all had for California wildfire season. It was the perfect use of knowledge over argument from authority: we were all masked up and we knew we were right.
Other things people said:
* N95s have a short shelf-life. Complete bullshit. The real first POF is the elasticated band. If that's fine, your fit will probably be fine. We knew this wasn't true so my 10 year old masks were still legit.
* N95s require a lot of training for fit. The fit test is trivial to do. We knew this but lots of people on HN and authorities claimed this wasn't the case.
* N95s cannot be reused. This was highly likely to be nonsense. The virus doesn't survive on surfaces for very long and that was the high probability event. After all, viruses rarely mutate so that they're terrible in all ways. i.e. this virus likely behaves like other coronaviruses except for a few variations.
And of course those with our half-mask respirators printed our exhale valves and placed our P100s in them and were full protected.
There was a lot of misinformation going around by people who just didn't know very much and were very eager to sound authoritative. They were all about "sources" and "citations" that are just parrot views (i.e. single primary source, many secondary sources giving the impression of consensus).
People made fun of the tech industry for how they handled it, too. Techies (being coddled millennial snowflakes) shut down before any government, stopped business flights to/from China, and started working from home and wearing masks earlier.
Honestly, my biggest mistake was that I was one of the few in my group of friends who believed the US had competent bureaucrats and so I stayed in the market while my friends sold ahead of the crash. Welp.