On one hand, it is true that XIV boss arenas tend to be the same circle and square simple area over and over.
On the other hand, I always preferred ToGC over Ulduar in WoW, so it's actually fine for me. At some point I just wanna get to the damn fights!
Honestly, the dungeon design in XIV is more worrisome to me. The same linear pattern of "pack, pack, pack, wall, boss" everywhere. Could mix it up a little!