TBH, when I paid 32k for my car with said features, it better works well - though. Do I expect it to drive for me? I expect it to work when I need it.
Do I need it aka learn2drive? No, I don't - but it is there though and it would've been cheaper without it and to be honest, many people could use blind spot detection and lane departure these days..
Difference here, however, is that buying a car isn't an alpha nor beta test and should need no "testing" unless you buy 2nd hand - therefore, this example doesn't really apply here anyway.