This issue is so much more complex than most people give it credit for. The IRS worked forever to unlock the US owners of Swiss bank accounts and had to threaten to throw the Swiss out of the SWIFT system to even get that done. Yeah, and they're going to get a crypto exchange based in China to give up their data? I just have no idea how this is going to play out.
Bing a CPA myself, I'm just happy to not have any clients that are into cryptos - YET! Whatever advice I would give them would surely prove to be short sighted.
The world, it is a changin'