The Sovjet union was a communist regime it wasn't a matter of taxes, it was a matter of assets being nationalized, private ownership being destroyed. That's a whole different ball game and honestly a dishonest attempt at best to defend tax reduction for those who don't need it and at the cost of making the worker class constantly foot the bill of society the most while the earn the least.
Tax havens are found out all the time, so the idea to just let them go about and do their thing is disturbing. Why have any laws to begin with than?