The 'bulgaren-fraude' was the cause for the government to change policy (and I believe law) to be much stricter on fraud and be much more vigilant when trying to detect fraud. The current scandal is one of the end results here. An interesting intermediary result is that the culture at the tax-office changed to be much more about 'getting the fraudsters' and much less about 'helping people'. Throw on a bit of "bureaucrats trying to cover their own and their bosses' ass" when people accidentally get marked for fraud, and you start getting the results we have here.
I fear that this culture (both the citizen as adversary 'getting fraudsters' culture and the ass covering) is still in place, and much more widespread throughout the government. Similar things seem to be happening at the National Mining Institute trying to discredit earthquake damage in Groningen for one example.
<sarcasm> luckily when the government stepped down because of the last scandal, the new government was a big change and a big step towards fixing these attitudes </sarcasm>