https://www.forbes.com/sites/kellyphillipserb/2020/09/14/irs-will-pay-up-to-625000-if-you-can-crack-monero-other-privacy-coins/?sh=46a70db685cc
So it's not public vs private but a whole new game for SEC and other regulators because they think that this privacy coins are going to be used by criminals to hide their wealth or other entities who wants to get away from the prying eyes of regulators.
Even if they should manage to crack it, there are now further developments that would simply have to be implemented, and privacy and anonymity would be guaranteed again. There are also now other projects, such as PirateChain, which pursue different approaches than Monero and are considered more secure. It will always remain a cat and mouse game.