First: Good on these employees for identifying a situation which did not sync with their moral code and having the fortitude to take action.
Second: These Google employees, and I would assume the vast majority, are absolutely, staggeringly ignorant as to the true nature, history, and extent of the relationship between The Military Industrial Complex in the US, The World Revolutionary Movement (WRM), and the Silicon Valley Tech Industry / Companies...Staggeringly Ignorant is a gentle description of their condition.
Third: Its not so much the Silicon Valley Tech Industry being "in bed" so to speak, with the Military Industrial Complex here in the US which keeps me up at night. In truth, the actual situation is far worse. The Silicon Valley Tech companies have extensive ties and relationships with Foreign (Current and Former) Intelligence Operations, whose goals may or may not fully align with the U.S. National Interests.
I find this fact concerning.
See below Screen Capture for JUST ONE path down the Rabbit Hole - NOT the only path by any stretch.