There's a couple suggestions, here, about this (and plenty others, elsewhere), but none of them really answers the question the way I'm looking for.
This comment: https://www.sevenforums.com/tutorials/13619-zip-folders-enable-disable-windows-explorer-view-5.html#post1445324) seems to address it as intended, for .zip files, but misses the .cab files.
Problem is attributes for cabs (0x680001a0), under HKEY_CLASSES_ROOT\CLSID\{0CD7A5C0-9F37-11CE-AE65-08002B2E1262}\ShellFolder, aren't the same as for zips, so how should I set those, in order to disable displaying them as folders, as well?
Note that I just want to disable having them listed as folders in explorer, not disable any other functionality (I'm using WinRAR, though, so they're associated with it, now).
Edit:
The linked article has a typo: the stated Attributes value is written within quotes and that results in a string attribute with a data value of dword:680001a0 being written to registry, instead of the correct dword attribute with a data value of 680001a0.
Line should be as follows: "Attributes"=dword:000001a0
