The "Windows" you can run on a Raspberry Pi (ignoring anything involving X86 emulation) isn't a general-purpose OS. It's more like a deployment target for UWP/IoT apps that you write on a Windows 10 PC.
There are important people at Microsoft who basically get very confused about what "x86" or "arm" means. There was a contingent that decided allowing third parties to port win32 apps with a recompile was off the table (despite it being very doable - just look at explorer or notepad running on surface rt), and to this day whenever many MS folks make public statements about windows on arm they sound hopelessly confused.
Important people don't know what underlying hardware their software runs on? I mean it's not that hard to figure that out... I hope they're not just parroting what others tell them.
Vim and gcc run fine, I can compiler kernels and busybox and work on my personal software projects and homework on mine. They don't run gnome or html5 browsers as well as your laptop might but nothing runs those well anyway.
