Yeah the side loading while it may work for certain My Cloud units may end up dragging down the My Cloud to the point its unusable per the comments in that thread.
For those interested in changing the main Public Share to private or read only:
https://community.wd.com/t/public-share-public-access-on/96854
https://community.wd.com/t/removing-public-share-wd-mycloud/137086