That's a very incompetent article.
The traditional Carmakers usually never design electronics by themselves (any more), they define the architecture in the car, and order the electronics from big suppliers, like Denso, Bosch, Valeo, Continental, and so on.
Their processing units (µP) in the different modules are of course automotive specific designs to fulfill AEC Q100, for example, and are tailored to the required features, performance and price. Very rarely commercial off-the-shelf processors are used.
There's a transformation already going on in the Automotive Industry, one part being to merge electronics into Silver Boxes.
So why should one assume, that the traditional suppliers won't be able also to design such electronics, or not already offering that?
It depends only on what the OEMs want to have.
Merging too many functions into one box only is a bad idea, like Infotainment and Autonomous Driving, because you have too many tasks in parallel, which will endanger the safety functions, and such a central system for everything wiould get too complex, SW and HW wise.
And also TESLA did not reach AD level 5, as these many deadly accidents of TESLA cars prove.. so why this worshiping of this PCB, but ignoring the lack of sufficient AI power?
Frank