Hardcore?
No, I'm not hardcore at all ...! No ?
I simply like it the game do NOT hold your hand ! It's simple as that and the devs of Larian Studios knowing that exactly ! I'm very pleased in D:OS NO "?" or "!" - mark will hanging above a NPC's head !
I must admit I was almost shocked to see such "?" or "!" in Divnity II: DKS !! I hope they do that NEVER again, never !! It's stupid, ugly, etc ... !
I'm sure there will be enough IN-game information about what each stat does via "hover mouse over" a name of stat ... like in Divine Divinity. It's crystal clear in first sight, althougth in the background it contains more difficult mathematics, but to have 100% fun to play the game you don't need to know that

...
Then it's up to you to play and have fun and if you love to make a whole study of all the mathematics behind the stats, feel free and start your investigations !
I myself have lots of fun + I always automatically start to make notes while playing, or make a drawing, a tabel of ... etc, and so I learn about stats, skills, ....