The situation in this analogy is complicated by the fact that there _was_ a fire at the theater. However, even in that situation panic can be detrimental to the system as a whole.
This is akin to seeing a terrible movie, announcing to the markets you're selling every share you own of the company, and then everyone doing the same.
Victim blaming isn't useful here. Bank depositors are de facto investors in the bank. Pulling your money and saying "this company is terrible leave" is not illegal and not a problem. Don't have a bad business with bad business practices controlling tens of billions of people's money.
If a bank can't produce the money I gave them that's their problem. They deserve to collapse and I deserve to be made whole. This whole "forgive the banks they have to make money too" non-sense ignores the fact the fed told these same banks they don't need any reserves in march of 2020. It's borderline criminal just like the idea of fractional reserve banking itself.