Mr. KushMan., I'm afraid most of the things you listed are untrue.
They will very likely pull another WebTrypt in the future.
Most vendors sell at least one substance that is illegal in the U.S. and they all ship to the U.S.
The Vast majority of these substances are Analogs which would be used against them.
If the DEA built up their case well and there was likely a death to go behind it, I believe Canada would have a good probability of extraditing.
Hushmail is obviously far from 'invincible' and has built up a very consistent reputation of handing over archives of their members E-mails at the request of law enforcement agencies.
While you are right they may have a strong case to make these drugs illegal and convict the exporters of that drug.
You are confusing the issues, we are talking about the small amount of chatter regarding these substances and their vendors being used as evidence in a drug enforcement-policy shutdown, where as you are talking about the companies sending illegal or potentially illegal drugs to the US and the possible relevant data that bring to light.
While your right that the chatter can be used to intercept the companies dealings with deceased, or even the companies identity. The chatter on public forums wouldn't be enough to provoke a shutdown like we saw in 2004, nor would it burden.
Clearly you missed the glaring attempt at original sarcasm, I know hushmail along with all other sites would hand data over. It is part of the cost of doing business, but as well they would need to be subpoenaed, so its not like just hand it over.
On a side note I saw a documentary on google and it was talking about their data being handed over to the law and that at any one time around the world they are dealing with 13.000 court orders for data.
Peace