I wasn't saying that one or two or more of those games aren't RPG's. But none of them is as big as most of the classic stuff was in terms of cultural impact and sales numbers and status. Baldurs Gate 1 and 2, Planescape: Torment, Fallout 1 and 2, Wasteland, KOTOR, DA:O, NWN, NWN 2, TES Morrowwind those were big games when the market was fairly small, when most RPG's weren't ported for consoles. Those are basically like Wordsworth and Shakesspeare are for poetry or what Goethe and Daniel Defore were for prose. Those are games that basically were the pinnacle of what an RPG could be, should be for that time. Trendsetters.
The games you mentioned are great little games each in their own way but they are niche games. Each of them serves up a helping of throwback stuff to a certain type of player. They do not have the goal nor the creativity to become an industry standard. Pillars of Eternity is basically Baldurs Gate 3, Shadowrun returns is... well Shadowrun, Wasteland 2 is the Fallout 3 we never got or the Wasteland 2 we never got, Original Sin brings back a lot of stuff from back in the day. In the end though they all lack one major thing which is something really new. They are well received and liked because they are fundamentally sound games that are well crafted and do the stuff they know how to do well, probably better than others, but still stuff anybody else does or did.
Basically if you want to compare them to something they are like a washing machine made by Bosch or Miele. They are classics in the way that you know they won't break in two weeks, that you know what you get but that they won't do anything new. Or let's say they are French wine. Classic, good, even great but predictable and basically because of that it also means that you know what you will order. So in that way they are a bit uninspired to me and limited because like I said.. I like them all in their own way but none of those games speaks to me in the way that those classics or even the Witcher 3 did because they all have a major thing wrong with them, which back in the day didn't annoy me because that is how it was done, but nowadays pisses me off to no end because just because it was okay 20 years ago, doesn't mean it's okay now and saying you want to go back to classical RPG gaming doesn't mean that you can throw all the stuff that has come along and made gaming better out of the window.
Still they are great games and enjoyable, but like I said, not universally but for people who look for exactly that.
Well the Banner Saga might not have a sophisticated skill system but it does have an ass full of meaningful decisions to be taken during the game. It has a bunch of characters who can die, you can die in several ways, it has great story telling. It doesn't have traditional quests but this is why it sticks out to me, because they actually did something that is different. You have new elements and a new way to tell a story and a game. The combat system is great fun and in the Banner Saga two they actually improved the Skill System by introducing skills that you can choose on top of your attributes which is pretty cool. The story is still really great and so is the gameplay. So it is an RPG. Just not a classical one. But to me that is actually a good thing because that means there is something new which might catch on and we might not be stuck between a rock and a hard place for much longer in either choosing to go back to classical times with all it's negatives or going forward and playing mostly dumbed down so called RPG's that are basically just moronic sandboxes like Skyrim and Fallout 4 or have to wait for a gem like the Witcher to finally take advantage of an open world setting. There might be finally some new ways emerging.