Is it possible in VW4 to avoid the use of VW image system?

In VW3 I have avoided the use of VW images system. I already have too many image systems and I am trying to reduce it to one system. Anyway, in VW4 I see that there is a file bbcode tag for the use of images in VW.
Is it possible in VW4 to avoid the use of VW image system and only use XF attachments and XMG images?

You cannot use XF attachments due to limitations of forum attachment systems that cause edit conflicts in wikis. However, you can use the forum's built-in IMG tag to include images where the URL is already known, e.g. if you uploaded it using a different image system.

VaultWiki 4 has an editor-based image directory search, uploader, and formatter which is quite an improvement over the VW3 method. If you use another image system, however, this feature is of no use to you. But you could probably easily write your own by reviewing the source code for the editor plugin and the related AJAX handlers.

Is it possible to turn off the VW image uploader?
I would definitely want to keep all images in XF. Same as how xenmediagallery stores images in XF.

Make sure that none of your Areas allow Attachment types to be posted there. To remove the editor button, go to the Syntax Manager and disable the FILE BB-Code.