As predicted they have built in obsolescence,

No, they don't they have faulty memory

Its not faulty memory, they are designed without thought of the cells wearing out, newer chips are made with more layers of memory and a controller that knows when a cell is damaged and moves the data to known good cells

exactly the same problem occurred on pc chips that are replacing mechanical hard drives

I remember hearing about that 'inherrant issue' with some kinds of SSDs - unlike a mechanical HDD, which tends to chuck other wobblies or stick to make odd sounds (before the click-click-click of death), some of SSDs just 'die' suddenly with no warning.

With things that are safety critical, you'd have thought they would've been designed with separate backups that simultaneously save the data rather like a RAID 1 array on a PC.

It was all SSDs at the time, one company released an SSD that did as I explained to correct it, doubtful a mechanical hard drive could take the movement of the car as an ssd can, which is what it is, like a bigger version of an SD card only lots in a case on top of each other

wasnt apple in the limelite recently , for messing with the software to degrade the phone batteries. could tesla do likewise

some call it building in obsolescence, though Apple allegedly is doing it in a big way, but don`t see why Tesla would do it if it gives them a bad name.

and they have a new battery which is meant to last a million miles apparently (on you tube) but no details of how its built apart from bigger cells, less needed, and can store more power.

though a lot of companies are going over to solid state batteries, which I gather Elon Musk is not in favour of?