It makes sense that Chrome OS will adopt this in tablet mode. Swiping down from the top to multitask in tablet mode was really a Windows 8/10 thing, but there are relatively few users who leverage Windows tablets on the daily. By sharp contrast, millions of users navigate iOS, iPad OS, or Android, so getting Chrome OS tablet mode to behave the same would only make the transition easier for general users who are approaching Chromebooks for the first time.