The 360 era is the era of some of the most brutal games released. I guess there was a dearth of more in between games accessible to a large public while also providing a respectable challenge but it's not like there wasn't games with more meat to them than "scenery" and "button mashing popamole" if you were actually looking.
Any of the above games will make the souls look like a walk in the park. I'm glad From exists but gaming didn't need to be saved by From, and all the modern "souls hard" terminology is quite the riot.
Yeah but the problem was that for the most part these types titles were becoming more and more niche
You gave the example of the NG2, that game didn't make as much of an impact as the original and Black had - same thing went for DMC4
The industry was moving too fast away from dificult experiences
So while DS is not hard - and honestly From fanboys overrate the difficulty of their games - it was much more demanding than what the casual player had played so far
Plus From's marketing was pretty clever:
This and the game's success among the though competition of 2011 AAA games, cemented this notion their games were hardcore