You can have data privacy without normalizing tax fraud, except in Germany one is used as an excuse for the other which is unfair to those who can't dodge taxes and have to carry the burden of financing the government costs for everyone else.
Financial transparency is a big thing in Scandinavian countries where cash is basically non existent and you can view the tax returns of others, and they still have GDPR and no tyranny while having low corruption and high government transparency. It's the sign of a fair and high trust society.
