I know they warned, on the other side they sold it as a "prove that you fully master your spec" + bragging rights. When gear matters that much this is just marketing rubbish.
Green fire was kind of different because general consens of this encounter ist and was that even when its easier with better gear, skilled players could do it even with the minimum gear requirements. The artifact challenge just shows you the finger when you're too low, dont have 4p, BIS legos, wrong trinkets or simply a disadvanted spec. thats a fact.
I might sounded like that, but its still different. Feel free to read my first post in this thread again that went like "I am glad i dont need to do it because i have more appealing transmog". You just put me in the box that helped your own argumentation. your tried (hard) but it didnt work.