Then you may be on the wrong message board. "The rules" are grossly violative of individual liberty and presumption of innocence.
There is theory. I agree with you. And beyond the reasons you stated, if a teller doesnt complete the suspicious activity form they are personally legally at jeopardy. So, I am double against it.
That said, I am saying for people who may find themselves in this position there are ways to navigate the process if you understand the rules and work honestly with the bank.
So, theory and practice are two very different things. Ive dealt with this on both sides of the counter.
So, get your congresscritter and senator to work on changing said rules. If they are dismissive, get the word out and remove them.