I am not super familiar with C and CUDA, so I read solely for the README and enjoyed it supremely. The blend of cheerful walking through instructive examples and your philosophical takes on how to approach the exercise to get the most out of it put me in a great mood. You captured that special upbeat attitude that comes about when you're doing something as well as you can just because it's so legitimately interesting to you.
Meta is a very large organization, and I'm willing to believe that a good chunk of Meta FAIR (the lab releasing all of this stuff) truly do care about innovations for advancing AI safety and are doing great work along these lines. I'm not disagreeing with your point about the company being led by its financial incentives as a unit, but let's also allow ourselves permission to celebrate this work by this group of people.