Here's the typical encrypted Bitcointalk user password.
$5$rounds=7500$uxETNKYBd49f1XZT$GqmY9SIrgeXwNI/QmhhkYKpznDrFPENk2uvCwBrnsLA
98% of the users here will not know what the hell that is, nor will they know how to use it efficiently. And the time to crack one doesn't meet the reason to do it.
I wouldn't be so sure about your last statement, if they don't know what an encrypted password is they could search in google.
And as Robert_A says it takes only few seconds to decrypt a password so it's not difficult to get the password in the 'plain text'
The price of 1
BTC seems very cheap to me, for the hacker is needed only one or two legendary accounts to hack and reach the ROI very fast(badly).
He said a few seconds to decrypt a password that has NUMBERS in it only. Those are easy to crack because it's not hard to go through every possible number combination between 1-10 digits. Also, it's not easy to reach ROI now as people are very sceptical when it comes to dealing with people, even legendary accounts. Of course, if you plan it out and get a big scam all ready to go then bad luck to everyone else.