I don't discount the fact that we have multiple posters who have a problem, but... we certainly have many forum user's who don't have the rattle.
Here's a project for anyone who has the energy... (I don't!)
Count the unique posters in this almost 600 post thread.
Report the number of unique posters who say their car has the rattle.
Report the number of total unique posters in the thread. (Or how many are not saying they have a problem.)
Report the number of users who say the issue is solved.
... and for bonus points... it would be fun to know how many unique members are in the forum who own a Genesis.
My guess is that despite the fact that WHEN the problem happens, it's often not properly fixed, there are many owners who don't have an issue.
I actually had a pause before my purchase after reading about this. In my case.. I'm glad that I bought the car.
P.S. I won't be shocked if nobody has energy for this project.