Upload location miss - is it by design?

Comment in filemanager/connectors/php/config.php says:

NOTE: by default, QuickUploadPath and QuickUploadAbsolutePath point to
"userfiles" directory to maintain backwards compatibility with older versions of FCKeditor.
This is fine, but you in some cases you will be not able to browse uploaded files using file browser.
Example: if you click on "image button", select "Upload" tab and send image
to the server, image will appear in FCKeditor correctly, but because it is placed
directly in /userfiles/ directory, you'll be not able to see it in built-in file browser.
The more expected behaviour would be to send images directly to "image" subfolder.
To achieve that, simply change
$Config['QuickUploadPath']['Image'] = $Config['UserFilesPath'] ;
$Config['QuickUploadAbsolutePath']['Image'] = $Config['UserFilesAbsolutePath'] ;
into:
$Config['QuickUploadPath']['Image'] = $Config['FileTypesPath']['Image'] ;
$Config['QuickUploadAbsolutePath']['Image'] = $Config['FileTypesAbsolutePath']['Image'] ;

Same should be done for files path.

I dealt with backward compatibility more often than I'd like, so this explanation is good enough for me.