I don't know why MAC is playing, most of these leaks occur on a company level - nothing to do with beauty bloggers, instagrammers or what not. Maybe they should do a little in company investigation because from my experience...these are factory issues and people who have access to the info. People have to understand that for those counter-fitters they make things based off images, not exact specifications. Sometimes they end up making counterfeits of packaging that was only one of the 'maybe's created for multiple choices, then the real item shows up in an entirely different package.
Sometimes they get the packaging right but not the lettering or the exact dimensions (tube is too short, too wide, etc.). I don't blame MAC for hating it, but they're barking at the wrong dog. Don't ever go after the consumer unless they're doing something illegal, always check in your own company.