I will give them the benefit of the doubt and assume its the later and not the former. If someone took a Valgrind substitute for Windows and ran a few game bundles, I would guess that over 90% of them has some kind of detectable bug in them in regard to memory management. Access to uninitiated memory and access to free'ed memory should be detected even if you have no access to the source code.
Out of the 10000 bugs that was mentioned by the article, I wonder how many got rated critical by up stream.
Out of the 10000 bugs that was mentioned by the article, I wonder how many got rated critical by up stream.