Although it was embarrassing to stand naked around a god's body, this is the procedure to take the godhood from that body, at least from the point of view of an Eros god.
Honestly, when Fluffy told Andrew the process of this ritual, Andrew immediately understood, the reason why the Eros gods did not become corrupted, at least not by stealing the godhood of another god.
Every god has a different ritual depending on the domain they control and the Eros gods dominate sex, eroticism, and everything in between, so their rituals involve doing obscene acts.
Just imagine having to do this in front of another god to steal their godhood. First of all, it would be difficult to find a god who would witness it, without running away and second, it was too much trouble.