I’ve found lane keeping assistants to be fantastic, but you have to think of them as ASSISTING.
It’s not going to drive for you. But it does an amazing job of basically canceling out crosswinds when you find yourself driving down the highway. It makes a huge difference, it makes it much less tiring/frustrating.
Going slow on a windless day? Straight street? Not that useful.
For helping with very gentle curves or very annoying crosswinds it’s quite nice.