> The time they take to design a new core is not affected by how long people making SoCs or boards or consumer products do or don't take to make their own products.
I don't think anyone implied otherwise. But the product in my hand is still lacking.
> Are you aware that major chip company Microchip
I don't see how this affects my argument in any way?
> Are you aware that people still announce new chips based on the Arm A53, a core announced in 2012?
Not for the main cores of laptops they don't.
> "Old" is not relevant to anything. Only design features are relevant.
There is sufficient context here to tie the two together. These cores are slow because of relative lack of development time. These cores lack vector units specifically because of their age, because they were designed before there was a spec (which you brought up).