The difference is that it's not about hitting a wall at all. There's just a large group of people that don't really care about hardmodes, so even if they could push through it they don't care enough to actually do it. The group is most likely a minority compared to the 2 groups that are satisfied though, so the split probably satisfies more people, however I still believe it's the reason why you see a big outcry for more content so quickly these days. As you say, people want progress, and when they finish normals in a few weeks and consider that being done, waiting for a new raid for months just doesn't cut it.