Finally!!! Moves like this will help small and medium businesses compete...finally we won’t have to pay 25.00 to mail a small book to China.
In every way this benefits mostly large stateside enterprises who source their products in bulk.
Yes, working to negotiate a change to that particular element of the UPU price structure makes sense (which is why Canada already did it for China-Canada mail.)
Whether rage-quitting the UPU makes a lot of sense (even as a negotiating tactic), is a different question; the UPU is more than a Chinese discount.