So if they don't work, you waste your money on the software. If they do work, they help you cheat at the real tests. Then you might go on to do a course for which you are not really suited, and because you lack the aptitude for the course, it will cost you more than it should.
Hmm; this software clearly makes a great contribution to aviation. If it doesn't work, you waste a little money. If it does, you waste a lot of money.
Sounds like what it is really good for is the people behind the software.