Actually they say they're giving less weight to them (historically Google has weighted them very heavily) which is significantly different from "test scores are worthless".
You've skipped over the original NYT article, which the qz.com article being linked to here quotes from. He does say they're worthless. Here's the complete quote:
One of the things we’ve seen from all our data crunching is that G.P.A.’s are worthless as a criteria for hiring, and test scores are worthless — no correlation at all except for brand-new college grads, where there’s a slight correlation
This chimes with my understanding and experience that Google only really use test scores and GPA's right now as a filter to manage the vast number of internship/entry-level applicants they get.
Makes sense, most companies only care about university grades for first jobs (because there's very little else to distinguish candidates at the stage).
I quit my job after 5 years as a programmer for my Masters. I must say, just working on one small class project with any candidate can help you find a world of a difference. I think its the experience and my personal interest that drives me towards worrying more about actually learning stuff instead of scoring grades. Getting a grade is more about identifying what a Professor expects and giving it to them. There are many students who slack off their effort in team projects. And, the worst part, the slackers spend a lot of time applying and preparing specifically for interviews, so as I see the ones who get the "best" jobs are generally the ones that I would never hire them if I was looking for candidates for my company.
One of the things we’ve seen from all our data crunching is that G.P.A.’s are worthless as a criteria for hiring, and test scores are worthless — no correlation at all except for brand-new college grads, where there’s a slight correlation
This chimes with my understanding and experience that Google only really use test scores and GPA's right now as a filter to manage the vast number of internship/entry-level applicants they get.