This is not true. Any version of Windows with the proper CODEC file has no problem viewing, copying, moving, or deleting RAW files. Windows 10 comes with that file.
Hmmm. Key operator: "with the proper codec".
I don't have the codec, so my Windows 7, as it is, cannot see them.
Nor, without the codec, is it capable of seeing them.
Seeing things is relative.
true for Windows without the proper codec...