You'd think it was the QA testers that let bugs get through, fun fact though, it isn't. I am willing to bet my life savings that a majority of the bugs visible in the bug filled videos posted were reported by QA testers. There comes a point though where testers keep reporting the same bug and the programmers simply start ignoring it because they can't fix it. And then they yell at the QA guys because QA is a thankless job that the others in the company hate them for doing. It's so much easier to be hateful/spiteful towards QA than actually fixing the bugs.