Don't know why the thread is closed, but I want to continue the conversation so I made a new one. @salamander uchiha Sarada obviously learned Fire style and Chidori from Sasuke. She spoke of the former during the Chunin exam arc and he trained Team 7 in lightning style during the second Sasuke shinden novel.
As for Boruto. He asked for Sasuke's guidance and has proved to be a valuable asset in battle. Sarada and Mitsuki told him what happened against Boro. Otherwise he wouldn't have brought him against Isshiki. The strategy to warp Isshiki could be done with a shadow clone (Sasuke's). Boruto doing it just saves him chakra. A win-win situation.
Naruto was upset but he has no room to talk. Given he earlier brought Sarada and Chocho to a secret meeting that he was supposed to come to alone. To discuss about an enemy that somehow knew Sasuke's location and had been targeting his life. Said enemy then targetted Sarada.