So....how are they promoting cooperation between crafters when half the item you'd want to de-sync are untradeable?

I'm all in for cooperation and specialization, but as in the pic they are showing....let's say I got that Ifrit Blade and I want to desynt it and I don't have blacksmith at 100%...the item is untradeable, I cannot get other player to help me.

How exaclty would that promote cooperation?