Acharei Mos-Kedoshim (6 Iyar)

Yoma 67b says that the sair lazazel is called that because it comes to atone for the sins of Uza and Aziel. They were the Bnei Elokim that were mezaneh with the human women, so the azazel is atoning for licentiousness. The problem is that Vayikra 16,21 says it was coming for "Kol pishahem Licol Chatosum" (for all inquity for all sins) so how can the Gemara say it was specifically for licentiousness?