That just links to a hacker news comments, which links to a hacker news comment, which links to yet another hacker news comment that just postulates that Google

That just links to a hacker news comments, which links to a hacker news comment, which links to yet another hacker news comment that just postulates that Google is abusing contract work to do the same work as full time employees but doesn't describe any incident of this occurring. In fact, the end of your linked list is the grandparent of this comment chain. Is there more compelling evidence that Google has used contractors in place of FTEs than HN users insisting it's happening with no other evidence?