It’s very open but at the same time not level gated. As in you can stumble into areas where enemies are much stronger than before. Hell, they literally put a super strong boss in the field just outside the first door to the first area designed to beat the ever living shit out of you in an effort to teach you “yeah, he is too much, go explore somewhere else”
I get some of your criticisms for the game and agree with a lot of them. But I don’t see a narrow more action focused character and mechanics as a bad thing, FFXVI is basically a Japanese Witcher 3. Now you may dislike that in favor of more blank slate character development and that’s fine. What I do find a major problem in 16 is that the combat system is complete overkill for the standard difficulty as the enemy AI is extremely passive outside of the big fights. So the game doesn’t force you to really make hard choices in terms of loadout and moment to moment gameplay a la DMC5.
Also, the side quests really suck mechanically and slow down the narrative way too much.
Practices like getting Reddit to only work with Google instead of Bing are probably a big part of it.