I get where you're coming from - doing one hop seems near pointless. if it's 1 in 1 out, then that's especially true. If it's a vanilla payment transaction (which it usually will be anyway), then the adversary has a harder time, because there is nothing to suggest that you didn't pay a third party, who themselves paid the crowdfund (say).

(Technically 1 in 1 out can also be payment, it's just an uncommon pattern).

People overestimate block chain analysis generally. It's a huge datamine for investigation, but in itself it tells people a lot less about coin ownership than seems generally believed, today.

I think that was the the CEO's point ... if you are Canadian and used your exchange account for the Bitcoin for Truckers crowdfunding campaign, you are now marked, and eventually they will be coming after your funds. So, to protect you (before he's been served any court order or subpoena on this, his advice is for you to withdraw your entire balance, log off his exchange, don't look back, and best wishes to you the future.

I don't even know if it will be limited to just their Canadian customers. Who knows what the U.S. might have planned.