This is highly likely to be true, and even if it's not, everyone should operate as if it's true. With the meteoric rise in price appreciation, I can't imagine the IRS at some point not requiring that the largest companies directly report users' income or capital gains to them. So don't be tempted to under-report your bitcoin gains. Similarly, the FBI and other money regulators have clearly shown their strong interest in stopping illegal activities conducted with Bitcoin, so I can't imagine them not receiving information from the largest companies and exchanges.
The allegation of a gag order is a bit odd, however. This should all be fairly obvious, so I'm not sure why anyone would want to keep it secret. Counting on the hubris and naivety of criminals, I guess?
The allegation of a gag order is a bit odd, however. This should all be fairly obvious, so I'm not sure why anyone would want to keep it secret. Counting on the hubris and naivety of criminals, I guess?