system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why aren’t there universal parameters for online passwords?

How is it 2021 and password parameters are completely site-dependent? Character limits, no special characters/special characters required/only certain special characters, etc. I feel like the various rules makes it more likely people will use bad habits like writing passwords down, or making less complex passwords more likely?

Edit: Upon further discussion in the replies, with many good points being made, I realized my real question should have been: why do some sites set password parameter limitations? I should be able to input a 25-character complex passphrase with letters, numbers, special characters if i want whether it’s for my Netflix account or Bank account. What I don’t understand is my bank being like, “Nah, you can only use 12 characters, and you can’t use @“. That’s my frustration, and was more my questions because I figured there was a technical reason behind it likely.
gpt
Because that would require a singular, universal authority to come up with such a thing and no such thing exists. And it is unlikely to ever exist because there isn't universal agreement on what the parameters for passwords should be. In fact, just about the only thing that is agreed upon with regard to passwords is that they suck and should be replaced with something else.

And even if there was a "universal parameter", people wouldn't be forced to learn it or use it.