It's a game that came out originally in 1992. At that time, the complexity/depth of story and gameplay systems was on par, if not a bit higher (imo) than Final Fantasy.
You will probably discover this if you put more hours into it. SaGa games aren't for everyone, but I definitely wouldn't call RS2 a generic jrpg.
It's not as focused on a single narrative as Final Fantasy is, and the dialogue and cutscenes are very short and to the point, but there are a lot of contextual stories that you come across through the world. The game is more like an open-world jrpg (keeping in mind technical limitations at the time) and has a lot of different branches for all the events in the story based on your event choices, your main character, generation, etc. The game doesn't really guide you much, you have to kind of figure things out on your own, or read a guide, lol.
Yeah, I guess there's the age factor, though I think FFIV and FFV are still ahead. FFIV in terms of story and V in terms of gameplay.
But again, I haven't played much yet. Hopefully things will click. Accessibility isn't the main issue I have with the game.