I think if you compare it to games from the last 10 years, then yes.

But at the time it was miles ahead of everything else. Most RPG's were incredibly unfriendly to beginners, throwing paragraphs of text to read, spreadsheets of numbers to understand, incredibly unfair mechanics, making the player make decisions without understanding them, and legacy mechanics that traced their routes back to tabletop wargaming. The marketing for RPG's revolved around hyping up bigger numbers of systems, skills, weapons, armor, items, spells, and whatever else you can think of. You can still go back and have fun, but the ethos of a lot of RPG's was quantity over quality. They were very difficult to get into, and most RPG's kind of had the assumption that the player already knew how to play RPG's.

It may seem silly to say that Skyrim was a break from that. After all, it has radiant quests, tons of NPC's, a pretty big map, tons of dungeons, etc. But it streamlined a ton and made it accessible. The quantity of voice lines was incredible for the time, and reducing the reliance on text made couch gaming easier. The leveling system is incredibly intuitive and fun, and IMO the best I've seen before or since. A lot of systems exist to allow customization of either the roleplaying or mechanical experience, but most of those systems are optional. You can just bash through the game with the equipment you get in Helgen if you want.

The game isn't perfect, but when I see criticisms it's usually that people want to add more systems or more complexity. That's the kind of thing that always sounds great in an armchair thinking about it, but when you actually put it in a game the game usually ends up bloated and tedious. It's great to add mods later after a couple playthrough, but it's easy to overwhelm new players with things like a spell creation system.

Whenever I see people talking on the Internet about trying Skyrim for the first time, I see a lot of other players recommending to start with mods. I also see a lot of people saying they bounced off of Skyrim, and I think there's a correlation. I ran into similar experiences with Civ and Cities Skylines: it's tempting to add in tons of stuff to try to get the best experience possible, but sometimes it's better to start simple.

Skyrim has bugs, but most of them are either just visual, hilarious, or can be fixed by re-loading the area or the game.

It's not perfect, but overall I think it's fair to include Skyrim in the conversation for... Idk, top-20 ish games of all time.