I can't see the argument behind X's environments being good because they were some of the most boring I've had to endure with literally one treasure off the beaten path per map. I much prefer XII's approach where you had many opportunities to go exploring and find tons of stuff that has nothing to do with the main story.

I can see why someone would be tired with open worlds, and I kind of agree, but for me personally still getting to actually find stuff and get lost in a world, even if it consists of more maps than just one open world, is still the best experience ever. Which is why I'll always take the likes of SMTIV, Xenoblade Chronicles, FFXII, Dragon Quest, and heck, Kingdom Hearts, over the blandness of FFX and XIII.

It really says a lot about FFX's world and dungeon design when the final dungeon is less complex, fun, and rewarding, than Final Fantasy III's first dungeon.