That's not true at all, though the risk is somewhat negated since most trackers only give you a few login attempts before banning your IP.It doesnt really matter what you have used special char etc or how long your password lenght... if you got what i mean.
Any of your passwords should be over 8 characters, contain upper/lower case and numbers, if not special characters, and shouldn't be a dictionary word.
In this case it wouldn't matter because he probably got keylogged, but it's still not a bad idea.