Your own article says "The one group of employees whose wages rose across the board are those working in the high-tech sector in Silicon Valley, with median pay up 32 percent compared with 1997." and tech sector employees are who we are talking about.
Wages should always be going up at least with inflation and tech has been enormously successful in the past few decades so tech workers should be outpacing inflation. That said, it could quite possibly be even better for tech workers if, for example, the H1B system wasn't abused to bring in cheap overseas labor.