yea, and there was barely any worldbuilding or character building within the first and second season. because how is there sorcerers and schools but barely more than 20 even in the whole series too. kinda feels like gege rushed thru jjk to start this new thing
One thing I always found strange about this manga is how the concept of curses itself is added to the "real world" but it barely has any impact on how things have developed in history.
Sukuna was already a being akin to a god that can level entire countries like a thousand years ago or something. Kenjaku has been developing monsters that make all kinds of turmoils for 200 years or so. The only time humanity becomes aware of the existence of curses is in the Shinjuku incident and it only becomes a major point in history in the culling game. But everything before that looks like has been 1:1 to our own history and most people didn't know what curses were. There were things like the roman empire, Ghengis Khan, the crusades, the colonization of America, Asia and Africa, the world wars, etc, etc, but we assume it was the same and something as powerful as curses didn't influence at all in all of that and people just don't know.
We could say Chainsaw Man has a similar problem, but it's somehow implied there is a sort of funky thing going on regarding reality and even so everyone is well aware of the existence of demons because, well, they are things akin to Sukuna and of course everyone knows their presence. But here it's like curses have been shoehorned in an ilogical manner regarding their influence in world events and general knowledge about them.
For a series that puts so much effort in the magical technobabble and parts are literally offscreen characters explaining to you what's going on in the fight so everyone can follow, it sure does not take it's world logic too seriously.