most auto-dipping systems do not immediately put the main beams on when you move to the main beam position!!! absolutely moronic, some are near instant but a lot of cars especially mid 2010s there is a delay of 1-5 seconds, sometimes more
I can't think of a single system I have used that operates like this. Many of them have a completely different process for switching automatic high beam assistance on and off and switching high beam on and off - on my car for example you move the stalk forward to switch the high beam on, the automatic system is a seperate switch. It'll always respond immediatly just like any other car.
I think there are a number of issues being confused as one here.
People who drive around without bothering to switch full beam off when required - this is a problem but has always been a problem. It's nothing new.
People who drive around with faulty and/or misaligned headlights. These are broken, they require fixing. Not much more to say here is there?
The performance of basic high beam assistant which simply switches high beam on or off. I don't see the purpose behind these and as people say they can be slow to react. I had this on a 530d years ago and rarely used it because it just wasn't helpful. The one benefit of this system is that it helps prevent the first problem I listed.
The performance of advanced matrix style high beam systems. Personally I think these are the single greatest step forward in lighting technology in decades. They generally work very well in my experience, but they are nothing like as common as people think and it's difficult to tell whether an oncoming car has this system or not, so I suspect many people blinded by the people who don't bother switching a normal high beam headlight off are mistaken for cars with this system fitted.
I see people complaining about laser lighting systems which to me further highlights that some people are simply confusing all of the different systems and are unsure what it is they are trying to complain about. My car has laser lights as well, but the laser will not operate unless a long list of parameters are met. The practical implication of this is that unless its 3am, you're 5 miles from the nearest inhabited building and there hasn't been a car along the same road in about 2 months, the laser is not going to activate. When it does, it's excellent, but I think the number of times I've ever actually seen it work is very low. It just isn't routinely operated, oncoming traffic will never see it and this is probably why it's been abandoned as a technology going forward. Yet plenty of people complain about them...