Both UPS and FedEx have been handling this correctly for years. They provide a simple option where you can choose who pays the tariffs (the shipper or the recipient). If it is the recipient, you just include their email and phone number so they can be contacted.

The “only” difference now is that the $800 limit no longer applies, so every shipment must include this information.

Which basically means end of Temu, Alibaba express, majority of Etsy sellers, etc.