As a seller, it's important to keep the customer happy even in this case where they may have damaged it.   OP, we had similar situation,  received the bag damaged after about a month, issude FULL refund the minute the bag arrived (when our TOS clearly states the period for returns), and still received the bad f/back - God only knows why. Hope yours is not the same buyer - but best of luck with it all the same!

Because the buyer was entitled to leave feedback for the transaction as they saw it.

You asked for it's removal which was done THEN the buyer asked for it to be reinstated as it was factual and should NEVER have been removed to start with so it was reinstated.

But worth a try to get it removed and hope the buyer has no idea how to appeal the removal, which often backfires for the seller when the buyer knows how the system works as well.