Huh. I don't think that this accurately describes what makes the game appealing to the folks who like it. At least, it doesn't describe what made the game appealing to me. :-)
I think a running theme of Dragon's Dogma is hidden depth. The combat gets mentioned a lot. But the world is also surprisingly detailed and interesting, when you get beyond the bland face that it puts on. True, the game is set in a single barony modeled after medieval Europe, which is "generic" in that a lot of games are set in such places. But this Barony is quite specific, in that the game takes the cultural structures very seriously. From the Baron ignoring you (as a commoner) until he's forced to admit your importance, to the way you slowly realize that the baroness is just slumming with you, if you follow the relevant romance questline, to the adversarial relationship the people have with the wilds, the world felt, to me, much more faithfully and thoughtfully rendered than just another world with essentially modern people dressing up in costumes.
The sense of place that you develop when you explore the world is also quite wonderful. There are specific rocks and trees that I remember, because I know that they mark the path to a chest, or to an encounter at a goblin camp, or fortend an encounter with a wyvern. I remember most of the roads and passes. I remember specific crags and valleys, and specific treacherous paths far above a boiling sea. I remember the world like I remember a favorite vacation spot -- as a place with a specific geography, with memories attached to that geography. It's not a given that an open world game models a world well enough for it to feel real.
And of course there's the series of endings. I love how well the game sets up the relationship with the final boss. And how it twists and turns as it sets up new game plus.
I think that it's perfectly possible to move through the game without developing an appreciation for it. But that appreciation is not just based on "fun combat". There's a lot to the game, and if it manages to catch you, it sits well and vividly in memory, even years later.