Point is, if it was just RNG legion legendaries, we wouldn’t have seen this phenomenon in BFA/SL.
If was just uncapped, infinite AP, we wouldn’t have seen this in SL.
If it was just titanforging, we wouldn’t have seen this in SL.
The only infinite grindable source of power left is M+, and we’re still seeing problems from infinitely grindable power.
We are starting to see something similar in Wrath classic this patch, now that the new LFD has opened up infinite farming of scourgestones.