This is what the Orthodox Jewish Text Sanhedrin 54b says, "Therefore, just as one who engages in intercourse actively is not liable if he is less than nine years old, as the intercourse of such a child does not have the halakhic status of intercourse, so too, if a child who is less than nine years old engages in homosexual intercourse passively, the one who engages in intercourse with him is not liable."
https://www.sefaria.org/Sanhedrin.54b?lang=bi
https://web.archive.org/web/20240000000000*/https://www.sefaria.org/Sanhedrin.54b?lang=bi