Not Taking Him Seriously
Windows 7 is Windows XP with significant improvements. When I copy from one directory to another, it gives me more options when dealing with duplicate files. So that's already not a 'design skin'.
Windows 8 is to Windows 7 and XP like a version of Android that lets you turn off Android and enter full-blown Linux is to Linux. Having a whole new ISA for a new class of programs is rather more than a 'design skin'.
Anyways, Chromebooks and Android smartphones and tablets are all very well, but if you actually want to get stuff done, you need a real computer. You don't have to use Windows for that; you can use Linux or get a Mac. Are those "dated" too?