It’s my understanding that WME is a talent agency not specifically focused on PR. They might have a PR person who handles that side of the business for them and a talent agency who goes out and looks for deals like books, tv shows and films. WME would typically coordinate with a star’s PR team (at least for their big name talent) to make sure there is a coordinated message and branding but getting a person who specifically is focused on their PR doesn’t automatically mean they’ve been cut loose from (or left) WME.