I don't get what they author want to tell me. This not great for powervr because now their chips will be cloned and competitors have access to trade secrets.

I don't get what they author want to tell me. This not great for powervr because now their chips will be cloned and competitors have access to trade secrets. Neither of that will get worse by some non commercial developers looking at the code. Nor will their code become a copyright infringement unless they do copy and paste. And with a VCS (that everybody with a task that big needs anyway) it's not hard, if trivial, to show it's not. And ever better, they don't need to show it's not, somebody else needs to show it is. Source to look at is a great thing for everybody who tries to understand powervr. Not less work, but more information. Sticking the GPL to is of course bullshit.