Concrete example: you get impaled by something. Do you: (a) do absolutely nothing and leave it in, and seek help or (b) rip it out as you see in movies because doing something is better than doing nothing.

(b) will kill you and (a) will save your life.

By doing something you have no business doing, no understanding of the mechanics and consequences you may will make it worse.

If everyone in Wuhan hooked up their loved ones to leaf blowers, the death rate probably would have been massively higher.

Do you have the tools to intubate them properly? Do you know how to get a good head tilt? Do you have anesthetic and a vasoconstrictor to administer?

Before you build a ventilator, figure out how you would shove a garden hose down someones throat past the vocal cords. I'll wait.