It's funny, because I felt the opposite way. With Angband's multiple windows it was easy to see the info I needed, I always found it more casual. I think the main reason though was I never read that the scroll would return you to the dungeon, so I always went from town, which ended up helping me stay well ahead of the difficulty curve. The curve is definitely faster than nethack's though, I remember around floors 20-30 it got much tougher very suddenly.
The difference with nethack is that it was fun to die, and try fixing your mistake. Especially if it was from something stupid you did. Angband though took much longer, and there was much more loss when you died after a relatively fun and simple run.
I think the two reviews hit the nail(s) on the head, though. A lot of it is polar though, you can't attract all gamers with a game unfortunately, it's a good display of the differences between players.