Good points, Rob.
It is likely that the person doing the launch has been running behind and hasn't completed everything as quickly as they had hoped.
In a way it is better to get everything done first and then launch instead of trying to adhere to an unrealistic deadline.
So a well run prelaunch may not be a target for hate, I guess it is just disorganized ones.
If I can't see the sales letter and review the product, I have no idea if the launch is of sufficient quality to promote the launch, let alone promote the prelaunch.