Zuck has said this very thing in multiple interviews. This is value accretive to Meta. In the same was open sourcing their data center compute designs was.
Thats not to say there isnt a strategy or that it's all values. Its to say that youre denying Zuck any chance at values because you enjoy hating on him. Bc Zuck has also said in multiple interviews that his values do include open source and given two facts with the same level of sourcing you deny the one fact that doesn't let you be mean.