yes that's what Naruto thinks, but I doubt Kishimoto is gonna make Sasuke out to be so immoral if Sakura, Sarada and Sasuke are ever going to be depicted as a functional family. Sarada is definitely a test tube baby created by probably Karin by fusing her own DNA with Sasuke's (maybe she got a sperm sample somehow). The Shins are clones, it's a theme of this arc, and thus it's not a stretch to assume it applies to the mystery with Sarada's genetic origins.
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