I've been slowly playing this game a couple of hours per week, and I'm about two thirds through, and while it's not exactly gripping, I think the game does have some entertaining bits to it. Principally, there's a weird amusement to its road trip-y, buddy film atmosphere. It's not all that much, but there's a weirdly likeable quality to having an open-world game with a party, so you have a fair amount of mildly entertaining (and occasionally context-sensitive) banter between your party members while you go around doing things. At its very best, the game shows an unexpected degree of polish in this aspect, when you're just driving around in your fancy car with your bros, looking at the sights, chilling out and insulting each other, killing the occasional monster while looking for a fishing spot (the fishing minigame is really quite good, and a lot more fun than the combat) and then finding a place to camp for the night so Ignis can cook a fancy gourmet dish for you.
So the game is occasionally charming, and I think you could've made something out of that if the game actually went all the way with this boy's camping trip aesthetic, but of course, it doesn't. There's the overstory, for one thing, which is preposterously, hilariously terrible (I should point out that I generally enjoy Final Fantasy stories), but beyond that, your party looks like a K-pop boy band, which is apt to reduce the level of attachment you're likely to feel. The game's overall aesthetic is completely schitzophrenic. And the open world itself is kind of awful - there's barely anything genuinely worth finding there, the sidequests are all uniformly terrible, and there's basically two proper towns in the entire game, which is kind of absurd, so you mostly just hang out around motels and bland abandoned industrial facilities in the middle of nothing, which somehow seems like a wildly mediocre road trip to me. The dungeons are decent, and I kind of like how the party keeps chatting all the way through each dungeon, but it's hard to get in the mood for any proper dungeon crawling when there's a highway two hundred metres away - somehow it just doesn't feel like a wondrous, secretive place of mystery. So I guess overall it's not very good, but I think there are some slightly novel spins to the open-world genre there that could've made for something interesting if they'd actually concentrated on that instead of just desperately mashing together all the junk they'd accumulated over the 10-year development cycle.