???
I didn't forget my password.
My sister didn't forget her password.
Our mom didn't forget her password.
What are you talking about?
(???)
I understand that that's the way you feel and I am sorry you had to go through all the troubles you are going through, but often there is a very good and simple reason why a computer will not accept a password.
My reply was prompted by your statement that the password not being accepted is "Some awful Apple bug", "People are saying their Macs are now useless expensive paperweights" and "this has been an issue for years".
It is no good blaming Apple or MacOS for it.
Just Google: 'PC will not recognise password' or 'Linux will not recognise password', and you'll get my point.
All of these scenarios can happen on all systems:
Most commonly, the password is forgotten or typed wrongly.
Equally commonly, the caps lock has been left on by mistake.
Less commonly, there is a problem with the keyboard, and trying with a different external USB keyboard might solve the issue. Did you try this?
Sometimes the system just needs re-booting (yes, one more time), or the SMC/NVRAM/PRAM need resetting on a Mac. Did you try this?
In very rare cases, something might be corrupted. This is extremely unlikely, but maybe it is what has happened to you. There is no way we can know for sure now that you have wiped the disk.
In any case, I hope you can solve your problem.
If it ever happens to you again, my advice would be to wait a bit longer than 2 hours before wiping the system, and listen to a little bit more advice and suggestions. (2 hours being the interval between your first post and the one saying that you were reinstalling Ventura)