Indeed, it is.
Here’s the relevant line from the Cloud’s Samba configuration file:
[ global ]
netbios name = CLOUDNAS
server string = WDMyCloud
veto files = /:2eDS_Store/.bin/Network Trash Folder/.systemfile/lost+found/Nas_Prog/mirrored/uploaded/.wdmc/
Which is unfortunate, because many of those vetos don’t even apply to this platform. That happens because they share code across multiple platforms that do different things.