Yea, it is an rather unpopular opinion but by modern standards I really don't think Skyrim is a particularly stellar game. The title of The Salt Factory's (YouTube channel) video on it has really stuck with me: "Evaluating Skyrim: an extremely shallow experience". The world is awesome (especially back then) but it is just a really shallow game overall imo.
I think Skyrim has done an amazing job in the world they crafted and the freedom they give you to explore it. I don't think there's a lot of games that can give you that same sense of exploration and adventure.