While he certainly has a lot of information, he also has a lot of misinformation.
I watched a few of his lectures, but found that some of the information he used was wrong. And not just a little wrong, but very wrong. So, I'm not saying he said it was on page 394 and it was page 393, but he made scientific claims that were totally false (said they were proven, weren't), gave totally false statistics, and on top of misinformation, he misconstrued what the information means.
If he presented information that I knew was wrong or could easily confirm was wrong, how much else in his lectures is wrong?
Personally I wouldn't bother attending one of his lectures and I'm surprised so many Muslims still listen to him. If you don't feel that your truth is good enough to justify your beliefs, such that you have to lie to make your points, then you should go back and study, because the truth of Islam is stronger than any lies humans can make up.
Source(s):
Example of his messing with the truth: he was discussing polygyny. He said that there were astronomical numbers more women than men worldwide. There are slightly more women than men worldwide. The reason there are more is that women live longer than men. He asked who would marry those "extra" women, and why should they be without husbands? Those "extra" women have already been married, for the most part, and buried their husbands, and are now enjoying their last years with their friends and families, and the LAST thing they want is a new husband.
It was wrong to make up false statistics, and then to twist them to mean something more than they do. The real reasons for allowing polygyny are sufficient: false information and twisted reasoning are not necessary.