If that is correct, then that is disappointing, and, to me, invalidates the benefits if Wikitree, where our ancestors are owned by other people, prohibiting our full access to the information regarding our ancestors.
I think that I can no longer in good faith, recommend that people join and add their family trees to Wikitree, where a single person, who may or may not be related to a person's ancestor, can own another person's ancestor, prohibiting the descendant, full access to the information regarding the ancestor. Such singular ownership of another person's ancestor, and, prohibition of full access to information regarding a person's ancestor, is morally and ethically, wrong.