By relevant, I mean "frequently run." Relics don't keep content in that status beyond initial bumps. It may be /more/ frequent than without a particular step later on, but it won't be objectively frequent. When you are the one who needs something, the relic having included that step won't help you all that much going forward.
In addition, if the relic is meant to be the "best" weapon, this content no longer makes sense within the original design of ffxiv. Armory chest, multiclassing, crossclass skills, the game was designed so that you could and should change classes freely, not get stuck in a single role. Relics throw all of that out the window. You have to grind as the one class you want to finish your relic on for months, and if you wanted all classes powered up with this...There are just so many ways this content could quickly and easily be brought in line with the original concept of the game. Made more for fun and less as a torture test. I see no sense in it remaining as it is.