Yes, it's quite complicated now (but it's getting better).
But it's not as easy as replacing it with something simpler. If you do, you will discover all the things you can't do with it. So you start to improve it, add features, etc. And after a short time, it's probably even more complex as html/css and still not as flexible and powerful.
But it's not as easy as replacing it with something simpler. If you do, you will discover all the things you can't do with it. So you start to improve it, add features, etc. And after a short time, it's probably even more complex as html/css and still not as flexible and powerful.