It's not a false positive to classify a company as a bad actor and move their emails to the spam folder if they refuse to respect user choices. If anything, I wish it would happen more often and at a massive scale, because then maybe companies would have an incentive to stop being so hostile around this.

Agreed, but the false positive I am referring to is the cathching of the non-spam message from the source of the previous spam message.

They shouldn't send marketing mail from an address they want to be read. I think that's been the standard for a while, in practice - most actual transactions come from orders@<blank> or something similar while marketing mail comes from a dozen other addresses.

Agreed, but many do. They want all mail to be read. Worst offender here is a bank.