This is really cool but I agree, if you're going to be doing this often enough, you need to learn how to do this manually and properly. It's more a principle thing to know and understand the skill of it over anything else. Then yes, go right ahead and use this for those times when you want to.
Yup, in the end it should act as confluence and confirmation that what you are already doing through using your eyes, driving skill and judgement is correct. But of course without tech like this checking all those boxes is still possible, boats, trailers, etc. aren't collecting dust because some truck owner doesn't have a trailer assist aid.