The robots had hypothesized about their reproductive capabilities, but were unable to experimentally verify their theories until they arrived at the robot pleasuredome.
Someone who enjoys pleasing their sexual partner and is soley focused on that, their own sexual pleasure doesn't need to be addressed as they are happy pleasing their partner. This partner/hookup doesn't necessarily have to have a gender
"I'm a trans guy and am interested in other cis guys in form of a relationship, but I quite enjoy pleasing cis females or trans males but wouldn't want to form a relationship with them"
"I'm a pleasuresexual and find enjoyment in pleasing other body types"