the reason is they’re selling sci fi dreams of robot servants even though these dreams are lies.
We've seen the same with chatbots, I guess. Objectively speaking, they perform worse at most tasks than regular search engines, databases, dedicated machine learning-based tools etc. However, they sound humanoid (like overly sycophantic human office workers, to be more precise), thus the hype.
I guess both chatbots and humanoid robots are basically about the fantasy of automating human labor away effortlessly. In the past, most successful automation probably required a strong understanding of not just the tech, but also the tasks themselves and often a complete overhaul of processes, internal structures etc. In the end, there was usually still a need for human labor, just with different skill sets than before. Many people from the C-suite aren't very good at handling these challenges, even if they would want to make everyone believe otherwise. This is probably why the promise of reaping all the rewards of automation without having to do the work sounds compelling to many of them.