I also generally find it to be an 8/10. Maybe a 9/10. I love the art style, the characters are enjoyable, the combat is MOSTLY fun (more on this in a minute), the soundtrack is fantastic, the exploration is pretty solid despite largely linear level design, which I actually find to be a good thing, and I fucking love that the game has a proper overworld, proving even THAT can still be done in a modern game.
Where I feel the game is somewhat held back is in its combat and just the structure of the game's pacing in general. The combat is only held back because it's very easy to settle on a play style and then not feel like budging from that because the game doesn't really make you budge from that. Once you effectively "solve" the combat, the magic kinda wears off. I think the game will probably be good for challenge runs and the like in the long run though because of how versatile its builds can be. I just think it's unfortunate that some playstyles are definitively superior to others in ALL cases. And I don't have any issues with the pacing of the game itself, but the way you go about progressing is kinda by the book. Enter new area, get a short cutscene or something introducing the area, make your way through the area with some party conversation peppered throughout, get to the end, fight a boss, another cutscene, and then camp. And then you do it all over again. It's functional, but it's kinda boring. I think it's inoffensive in the grand scheme of things more than anything, but I noticed it, so I gripe about it.
All that aside, I think the game is fantastic. Not a masterpiece by any means, but for $50 and being made by a much smaller team than any AAA developer out there, I can see why people would treat it as such. It's a video game doing a whole lot of shit right in a world where devs and publishers are doing a whole lot of shit wrong.
tl;dr game good, and while I don't consider it a masterpiece myself, I get the sentiment.