Here's another way to think about it...
Let's say God DID "know" that Adam and Eve would sin--and created them anyway.
People choose to have children all the time, knowing full well that none of these children will be perfect, that these children will grow up to disobey. Does the fact that you will produce imperfect offspring--perhaps some even criminals despite the fact that you are the best of parents--stop you from having kids? No.
The argument is a straw man. It's idiotic. In real life it happens all the time. Does that mean that we kill the parents that have bad children or that they are to blame for their evil offspring, or that since their children go rogue that this means their parents don't exist? No.
Stupid question.
People who are mad at the Watchtower end up blaming the Bible instead of the Governing Body and the elders and their instructors from the cult. A cult serves you meatloaf, you associate meatloaf with the cult, you leave the cult and you go around telling people in the real world that meatload is evil--you even tell regular people outside the cult that they are stupid and "evil" for eating meatloaf. It's just meatloaf.
But it's not really your fault. You have been brainwashed by a cult to associate "meatloaf" with a cult.
The Watchtower makes you associate the Bible and religious things with its cult--so questions designed to make meatloaf--I mean religion and the Bible look stupid and evil are constantly made because the Governing Body has brainwashed members to make sure they don't get the blame. "Don't blame us. It's all in the meatloaf," the Governing Body told you, and you still believe that.
But meatloaf is just meatloaf. It doesn't do the same things to people outside of a cult. They eat it all the time. It's just not served to them by a cult. That's the difference.
(By the way...The Watchtower did not create "meatloaf.")