The game is trying to cater to three types of people:

Those who do not want to participate in dungeon raids or FATEs all the time will use crafted equipment.
Those who do not want to participate in dungeon raids, but do FATEs will use Grand Company and Crafted Equipment
Those who do want to participate in dungeon raids will use Dungeon Drops (and Darklight, relics, primal weapons, etc.)

And those who do all 3 (a lot of people) will lean towards the dungeon related drops. So all types of players are catered for. 'Hardcore' will go to dungeons, 'Medium/Light' core will lean towards Grand Company/Crafted, and pacifists will be Crafted :P