I don't think it has anything to do with "passion to see this game succeed", but it is a fact that a lot is unexplained. Fore example, on levelling up my Warlock, when you pick from the Eldritch Invocations, nothing is explained. There need to be tooltips there in the level up UI! ("You can cast Mage Armour on yourself at will" - if you have no idea what Mage Armor does, how am I supposed to make a decision here?)
Now you see yours is a better & more accurate point. Tool-tips, even if they were an option you could select at the start of the game, would be a welcome addition for the later stages of the game. However I still believe that all the more basic concepts of the game are explained perfectly fine during the tutorial (just as they were in DOS 1 & 2).
Anyway, all this arguing is taking up time I could be spending playing the game.