Sounds like this is the BotW of JRPGs from his video impression.
... I can do that right?
Seems like the good points is that it's strongly gameplay focused with a good degree of freedom on the order you want to do things... without a strong singular epic story to drive your progress onward.
It has a exploration aspect very much like BotW but otherwise you really can't compare it to the exploration found in BotW which uses exploration in a 3D environment to its utmost gameplay potential. It's very different.
It's more a Skyrim of JRPGs only more focused. The exploration pay-off is mostly narrative and combat encounters that simultanenously gives you loot.