That's an extreme example. Even in XI at best one of the 'best' items that wasn't end-game were level 59-65 that was crafted at 75 cap. Most 'BiS' was spread through content which didn't create other gear being useless, it just means until you hit end-game, you actually had something worthwhile that wouldn't become useless in the next update.
In XIV, DL was useless out the gate as Myth and coil gear already existed in terms of progression. Hell, even majority of the crafted gear in this game is worthless when dungeon drops is far superior due to added stats you can't get on crafting.