I agree completely and have witnessed this myself since more or less the advent of Abyssea. Crafters have seemingly vanished from the game for nearly all gears below level 75. I was reading over a few profiles on FFXIAH the other day and noted that for a majority (of the ones I viewed) players would have several level 90 jobs but absolutely zero crafting skills.
I think a huge part of the problem lies not so much with the absence of crafters as it does with the difficulty of becoming one. The crafting system is tedious in every regard. Slow to level, hard to get supplies, poor instruction in game about advancement and recipes make learning and leveling a craft not only extremely frustrating, but hideously discouraging to a casual gamer.
I would love to see the level caps on crafting removed to allow each craft to reach veteran rank as well as a more forgiving system on breakage all tied in with an improved skill up rate.