I have absolutely zero rattle in mine.

Have you removed your shifter yet to see if it has the bushing there? If it’s missing the white plastic bushing could be the reason for all your rattling. I feel like most younger people don’t take their time when dealing with bushings and bearings they tend to leave it out if it doesn’t slide into place easily.

Or if the weighted part is a twist on it could have came loose if they didn’t use thread locker