Why can't you leave negative feedback for buyers / bidders that don't pay for their item(s)?!

[creole58]

Why can't you leave negative feedback for buyers who didn't pay for their item(s)?!

[plpmr]

because eBay stopped it well over 10 years ago - you open an unpaid case and that harms the buyer more than bad feedback -

https://resolutioncentre.ebay.co.uk/