I think the biggest pain point is that its expensive and also gated. People are gonna do Rift hunts because they are new content, they dont want to spend a week logging in only to fast travel to several different provisioners to turn around and buy mats of the TP then travel back to the Provisioner for a stupid account-bound token they decided to obfuscate and gate the collection.
Considering the Return to Living World achievements, this "Streamlined" path is actually less fun and engaging.
If it was just Gated, sure, boring but doable. If it was just Expensive, fine its a gold sink, but its because it is both and it was both the first time many of us did it that people are frustrated.