It doesn’t have to be completely unsupervised for the driver to realize huge improvements in quality of life. I don’t even notice when people drive slow or cut me off. I’m just relaxing, fiddling with the music or talking to my family. And managing two toddlers is a lot easier when my brain doesn’t have to run a constant background job.
I do hope that unsupervised comes soon though. The tech is there, or at least far enough that I consider it better than my own driving. The hurdle is regulatory now.
If you're distracted and not actively monitoring an SAE Level 2 autonomous system then you're a hazard to yourself and others. Don't do that. You need to be ready to actively intervene with zero advance notice.