1. The repair kit described here is not mandatory for anyone to rent to be able to buy the parts. You can just buy the parts alone and use whatever tools you want. If you attempt your own repair, you should use the simple ifixit style tools, and understand the higher risk of damage you are taking.
2. The kit described in the article seems very decent for any kind of independent repair shop. They will probably already have pretty much the same setup.
3. Right to repair is about access to documentation and parts. Nobody epects anyone to make it easy for the user to replace 512 pin BGA part. Right to repair does not mean that it should be easy to repair something, just that there shouldn't be artificial obstacles and that there should be supply of documentation and parts.
4. Repairability is still an important topic and with discussing, but it is a separate issue from right to repair. E.g. I think phone makers could make replacing batteries much easier and that it would be a much smaller design compromise than some people like to claim. But that is a different topic from the baseline of right to repair.
To me this seems like Apple has a good basic right to repair offering both for individuals and independent shops. This article is bad for the right to repair movement, because it doesn't understand what it is asking for.
Parts. Documentation. No artificial obstacles.