Oh, yeah. There's definitely not an entire game worth of casual content like 15 combat classes to level and gear, 10 crafters and gatherers, dungeons, trials, raids, EX primals and Savage from two expansions with rare drops in them. Certainly nothing like achievment and log completion, minion and mount collection, the Gold Saucer.. gosh, there is just nothing for the players who don't raid hardcore enough for Ultimate.
Jokes aside I have never stepped foot in Ultimate and maybe never will. The weapons are gorgeous though and the interest that it has generated online for the game is impressive and something I'm really thankful for as someone who loves this game and wants to see it continue to grow and prosper.