Is that the line for regulations you're okay with holding on to? If so you better start regulating how many beds each hospital has as well, if bed demand is the bar you must control bed supply.

We couldn't get people to wear masks to reduce the spread and help keep beds open for all the other typical needs, why would they let harm from fireworks impede them?

That has more to do with hospitals hyper-optimizing for profit. And a regular demand actually improves the situation here.