The Lotus 79 was already easier to handle than the mercedes W196 and the MP4/4 was easier to handle than the lotus 79..that's progress.
It is the same with every machine which is performance dedicated (fighter jets, competition vehicules) they are easier to handle so that the pilot can actually concentrate on...driving.
This is no easier, this is different; no way you could fight on the edge of performance with a lotus 79 as you do with modern F1 car.
You can either fight the car or fight the track not both at the same time.
As for pinnacle of technology maybe those are not the most useful technologies anymore but just talking about aerodynamics the actual cars are quite cleverly done and with some exotic solutions sometimes.
The on track action is another topic.