Yes, pre-1700 requirements say
Derivative or second-hand information such as a family tree that was handed down to you or a tree found on another website may be used to create a profile of a modern person. (Even with modern family members it should be a priority to find and cite original sources.) We have a higher standard for deep genealogy. You must never create a pre-1700 profile without citing a reliable source.
Honor Code Item VIII states, we cite sources. https://www.wikitree.com/wiki/Special:Honor_Code
Without sources we can't objectively resolve conflicting information. See https://www.wikitree.com/wiki/Help:Sources
Pre-1700 Profile Source Requirements - https://www.wikitree.com/wiki/Help:Pre-1700_Profiles#Cite_reliable_sources
Pre-1500 Profile Source Requirements - https://www.wikitree.com/wiki/Help:Pre-1500_Profiles