Nonsense. FTD data is provided by the SEC, it is not a report from a broker or broker dealers. It is an automated report from a Federal Reserve Member, an electronic output from CNS based on brokerage account credits and debits, there are no direct inputs received from brokerages.
The same as your bank account, you cannot change the numbers, either money is provided and or a debit is withdrawn. Pretty simple process.
Here’s the kicker to blow your theory away, There are No loopholes concerning FTD reports, NONE, not a single instance of inaccurate FTD reporting.