I have had multiple cash transactions above $3,000 every year that I've done this. Not to avoid taxes, not to keep them off the books, but because one of the parties has either the unwillingness or inability to take electronic payments. Elderly people, those located in rural or otherwise isolated areas, those with a natural distrust of government for whatever reason, or those with a distrust of banks in general. These are all valid use cases.
This law would make it nearly impossible for me to do what I do (on the side).
I wouldn't say I routinely do large (>$3000) cash transactions, but I do them often enough that I guess I'd be a criminal in the Netherlands.
Hopefully not for too much longer:
It's incredible how lax the rules are for how verified the CC information needs to be for a transaction to clear. There was a HN article about it not that long ago, w.r.t. dealing with Stripe or one of the other big processors. Stuff like the CVV can be wrong, the issued name can vary by some heuristic, etc.
"Of all tyrannies a tyranny sincerely exercised for the good of its victims may be the most oppressive."
The average person isn't affected by this type of government surveillance and potential overreach because the average person doesn't buy things that are priced at over 3,000 euros per transaction. They can easily hide all their daily transactions from the scrutiny of government and surveillance capitalism just fine.
This regulation only impacts the wealthiest people and/or the organized criminal.