TAKENOUCHI no Sukune was previously alleged to be a fiction created by subsequent generations, and there are also those who view Soganoishikawa no Sukune to be a creation of descendents of the Ishikawa clan.
武内宿禰以前は後世の架上と言われており、蘇我石川宿禰も子孫の石川氏による創作と見る説がある。