password managers have relatively low adoption and plenty of people are walking around with poorly managed credentials

All of the modern browsers have built in password managers so I doubt that very much.

Are they as secure as your self-hosted bit warden that is not accessible via the Internet? No.

But it does still keep track of your usernames and even alerts you if you have a breach.

One is like data from Ten Forward.

You are mostly correct it is length * (possible char values).

See passphrase generator.

https://www.keepersecurity.com/features/passphrase-generator

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The only shocking part of your data is that we still have pedestrians

What about my if else AI algorithm?

It’s not really an llm