This is not a family law judge subpoenaing coinbase for records. I've actual been an expert witness on such a court case and where Coinbase complied and gave the transaction history, for the record.
This is not the FBI or some regulator's enforcement arm investigating money laundering and having a court order requesting details of specific accounts. I'm sure they comply there too.
Nor is the IRS requesting information on specific people they think failed to report their taxes. That too would be understandable.
This is a fishing expedition. The IRS is requesting coinbase to turn over all personal information of all accounts and the entire transaction histories, with no specific basis given.
This is the financial privacy equivalent of court-order wiretapping vs dragnet surveillance. It is entirely reasonable to be angry about this.
Case in point: I bought and sold bitcoin on Coinbase at that time, as part of my non-registered sole proprietorship consulting business--I was paid by my clients in bitcoin, and purchased some on behalf of my father. As per the advice received by my accountant at that time, prior to publication of any IRS rules regarding bitcoin, I merely reported aggregate values of my own sales, not individual trades, on my Schedule C business income part of my personal 1040. Even in light of later advice published by the IRS, it's not clear that this was the incorrect way to file since it business income is handled differently. So I paid my taxes, legitimately, but there's no mention of bitcoin, or the individual trades that were made to cash out that bitcoin on Coinbase.
But, it now seems that the IRS is going to get a data dump that has my name and a bunch of bitcoin trades from years ago, and have no way of knowing that I already paid taxes on them. And, bad on me, I'm not sure I have sufficient record to prove my story, or if I do it will take a lot of unpaid work to put together. So I'm either going to get hit with an excessively large tax bill, or deal with a lot of pain and suffering and personal cost fighting this in tax court, losing a ton of my time for having done nothing wrong.
Fuck that. That's why we have due process and don't allow law enforcement fishing expeditions. False positives have a cost.