more tech savvy guys don't want to waste time with interviews

Piaw Na wrote a great explanation of how Google gets this wrong last year. Choice quotes:

"I had all sorts of perverse incentives to not interview people."

"If you wanted to get promoted for these non-engineering tasks, move into management."

The HN thread was exellent as well with 135 comments: http://news.ycombinator.com/item?id=1865099