There is a difference between having already farmed an event for years, and it being relevant. If you have played WoW any, compare the longevity of its rewards in initial raids like Molten Core to rewards from Dynamis. And that is one thing a lot of people liked about FFXI, if you put in the work for something like a relic or mythic, they stayed good investments.
Now unless there is a way for Relics, Mythics, and Emp to go above or equal to this new gear, why would anyone do anything related to them? Can even add in all the magian trials as well outside of ones with hard to duplicate effects like - pet damage taken.
Consider this, the new low end 1h weapons, are on par with the damage of old 2h weapons. And the new low end 2h weapons are 20-30 damage above most R/M/E, while the new good ones are often 100 damage above R/M/E.
