Is caused by the large number of people who think that Bitcoin is anonymous, when in fact Bitcoin is so opposed to it - all transactions Bitcoin transparent and everyone in the world can see the ongoing Bitcoin transaction. People may not be able to connect a particular individual identity to a Bitcoin transaction directly (this is why sometimes Bitcoin is also called pseudo anonymous), but if they find it, then they can see all the transactions you have done on the Bitcoin network. This is why Bitcoin is the wrong way if you use it for things that are not true.