Right to repair is to allow anyone to do a repair. That could be an independent repair shop, that isn't charging £100+ 'technician' hourly rates, or yourself.
By making parts unavailable, it effectively makes repairable products end-of-life. By keeping prices for parts sky high, you make it uneconomical to do a repair. By requiring parts to be 'paired', you further limit the rights.
Legislation is hopefully coming to sort this around the world, as the amount of e-waste is getting out of control. People have a mindset of throwing something away because their old product is old and it will more expensive to repair than to replace. And the industries are quite happy to propagate the myths that repairs are unsafe, or that you really must get experts to do them because of made-up risks (I am not saying there aren't some exceptions, but most reasons are bogus like the sexual assault claims the motor industry made up to fight right to repair in the USA, funded/lobbied by all the major car makers).
EVs are already impacting the car industry by not requiring the same level of repairs and maintenance, with many dealers making their profit from servicing and repairs - not the car sales themselves. Without the same level of income, many may not survive, so of course they don't want to have just anyone being able to work on them.
It seems the EU is moving ahead faster than the US, to close the loopholes that have allowed some car makers to avoid existing legislation. Encrypting and pairing parts was part of this, stopping independent mechanics being able to do some work that they're meant to be able to do. At the time of creating the rules, neither of these things were known about or properly considered.
