You mean the ones that don't want to go to the office? What's the point of taking in talent, getting them up to speed at Google and then having them leave after 12–18 months?
The general opinion here on HN seems to be that the most talented that can easily land a new job are the first to leave - might be a good time to skim the cream of the crop, even if for 12-18 months. Who knows, many might even stay when every other major company moves to RTO.