The next section of evilbible.com's argument talks about how God created humans, who in turn ended up sinning. Therefore, God's creation was imperfect, and something imperfect can't come from something that is perfect, so God must not be perfect. There are a couple big things missing from this argument:
In order to show this, Evilbible must first show that the world is, in fact, imperfect due to a creative flaw. There is another kind of imperfect that Evilbible.com did not recognize, the state of being made perfect. Think about Revelation for a minute. Revelation is when God ultimately exalts His Creation and it is made perfect. The world is imperfect because of being in the process of being made perfect.
Why God chose this method, we can only speculate. The only thing we know is that Adam and Eve are the ones who messed up the original good (not perfect) creation. Satan's role is conveniently left out in this article. Satan is the one who began warping the good desire for knowledge that Adam and Eve had, and they decided to attempt to fulfill themselves rather than turning to God. The path that the world then went down allowed God to show that He keeps His promises, He is love, and He is always glorified. The world will be without sin once God is done with it, and Satan will not be able to interfere.
Again, it is also worth mentioning that you cannot limit God with a man-made world and attributes described in man's language. God is beyond perfect, so perfect cannot be made a limit.