All they are doing is shifting the argument because they have realised they cannot outright go against it any more. Now their argument will be they are for right to repair, so long as it does not compromise on security, only focus on authorised channels, and force people to declare the use of used and non genuine parts. All of those points they make in this support letter. And all give them control to stifle the repairability of their devices.

You can see this already with the amount of parts that are serialised already - they will just continue to argue that you cannot replace these parts are it will compromise the security of the product. Or that parts will only be made available to authorised places - where they have to sign a whole bunch of documents giving up on a lot of your rights to enter. Then offer no real useful parts except some expensive whole assemblies.

I don't think this changes their stance on right to repair at all - now they are just arguing the same points they always have been but from the other side. So they have better sway over the bills and look better to the public. I don't see this changing anything.