Always thought that camera lenses the way they are, are the already obsolete technology. I mean we can fit billions of transistors on a fingernail, but we need

Always thought that camera lenses the way they are, are the already obsolete technology. I mean we can fit billions of transistors on a fingernail, but we need this mechanical contraption to zoom things? I think this invention is still not it, but I am glad the tech in that space is finally going somewhere. Don't get me wrong, I love lenses but it feels like using something from a last century, even though it was just made.