The dungeons in Endwalker were fine. One of the biggest mistakes made by World of Warcraft was the difficulty increases in dungeons during Cataclysm and yes, this is a 100% "you think you want something and then you don't". Imagine what it is like running a dungeon that is normal content in a roulette where every mechanic a boss does can potentially one shot a DPS, or three shot a tank. People would get incredibly tired of running the content when it provides no other benefit than to let people level up alt jobs, and people need to learn their jobs during leveling dungeons, not get frustrated because they are on the floor during the second boss because the healer got tired of resurrecting them for the sixth time, assuming they can even keep enough MP to heal the rest of the party in this hypothetical harder dungeon.

Easy content has a right to exist, even if some of the stuff at the lowest end needs to be given a few tweaks. Syrcus Tower itself needs some modifications to make it at least have some teeth, and there are good arguments for bringing back the slightly tougher mechanics for Ivalice. Albeit, Ivalice was probably the hardest set of 24 man dungeons they ever made in the history of the game.