It seems really similar to an article from March of 1998 about Microsoft: https://www.nytimes.com/1998/03/30/business/equal-work-less-...
Now the issue is a company is using temps to hold down the market rate for salary. Less about tax avoidance, and more about wage suppression. Of course it’s also a valid argument to say the Supreme Court decision at the time made it more likely for companies to choose this route.
Also true that the two-tier system existed in one of the big tech giants and with it many of the same symptoms. It is interesting to see it again with Google, although I wonder if Amazon/Netflix/Amazon have a similar situation.