Sr3 was the Skyrim to Sr2’s Morrowind. Shinier but simplified. A good entry game to get to Sr2 imo.
(Personally I wasnt a fan of Sr4 because it felt like it was just a really expensive dlc. Didn’t really add anything to Sr3 imo, but since there is evidence of people liking it here, I’m not going to come after it too hard. It might be a great entry title for getting to Sr3 to get to Sr2 eventually, and imo that’s good enough for me to be happy about it getting mentioned)
I think Skyrim was a big entry point for a lot of fans who haven’t played the earlier games. I do agree though, Morrowind is amazing and is, in my opinion, a better game than Skyrim. Skyrim is kind of a dumbed down Morrowind.