For this particular article, there is already a wealth of data on femme-presenting robots, just the ones that we do not particularly see, such as Alexa, Google's Siri, and the like. The Washington State study offers a breakdown of why the ones in person are preferred, and with the invention of new robots. One of them is the more famous Sophia, a Hong Kong-based robot that rose to international notoriety, being the first to break many (robotic records?). There was a wealth of data to choose from.