I believe what Joaquin was referring to is the notion that the web team in Reading will be entering into work on the desktop-oriented experience. As you rightly note, the Android and iOS teams are focused squarely on experiences for mobile devices.
For the edification of the list, the web engineers in Reading were in the mobile web team, with a focus on experiences for users on mobile form factor devices like phones and tablets. It's going to take some time to ramp up practices for tackling code and architecture historically oriented to the desktop form factor. We'll need to ensure continued stability in the platform and work with the community as we propose and introduce changes to the desktop form factor user experience.