This isn't some recent revelation or anything. Facebook's AI team (FAIR) open sourced their major technology in 2017 with Pytorch. In 2018 they published Pytext in an age when most people didn't know what a Large Language Model even meant. Seeing LLaMA get made should not be a surprise to anyone who is familiar with the history of AI research. It's like hearing people call CUDA an "unfair advantage" while ignoring billions of Nvidia R&D dollars getting spent in the AI sector over the course of a decade.
It might feel like "brand rehab" or "good will" as a consumer, but a lot of this work was put in motion a while ago.
