IMHO, I believe as an industry we should abide by the existing laws of the land, and cryptocurrencies are not exempted because we operate in our respective boundaries/countries so with that fact we should abide by the existing laws/regulation and the privacy coins like Monero, Zcash, etc. has superb privacy features that even a sophisticated government like the US are in a hard time to tract its transaction thats why they are afraid that it might be used for all illegal means like terrorism financing, etc. in that case I think we should ceased of using privacy coins for now.