Under Amazon’s review rules it should have been removed because it was a fulfilment issue caused by Amazon which was in charge of the logistics.
While you and I may consider the buying experience to be an indistinquishable melange, Amazon (theoretically) distinguishes product, seller and fulfilment issues. And only product issues are to be reviewed on the product page. As the issue was caused by Amazon, it is a legitimate issue to remove under their current rules.
