I do agree with what you say, but then previously we were of the notion that literacy was the main problem but then we find even educated bums have entered into the fray.
Even for the simple fact you just talk about their religion they are not interested to know the weakness and the drawbacks. This paradise thing has got into the educated head also I believe.
I don't find it so easy to may them understand all these. I too have good well educated (Doctors engineers)converted friends even they are not rational enough when it comes to religion.
Now I am sure that even if the prophet himself comes and says that whatever he has told was rubbish (that is if at all he did that) I dont think any of these fanatics are going to accept that because the mullahs have done the damage well.