Technology

For example, while a humanoid robot may be capable of performing household chores, a robot specifically designed for tasks like vacuuming or dishwashing will typically do the job more efficiently, as it is optimized for that particular task.

The counterpoint that is usually brought up to this is that human spaces, like for instance kitchens since you brought up the example of washing dishes, are designed and optimized for humans to operate in, and so humanoid robot design may actually be the most efficient navigating and working in these environments.

Secondly there is the argument of versatility, of not needing to design different types of robots for each specific task. And thirdly, there is the efficiency of mass production, that is by only having to produce one type of robot that can fulfill many different tasks, the production can be optimized and costs minimized.

I'm not saying you're wrong, i actually personally agree with you that there is good reason to remain skeptical of the necessity of humanoid robots, and this may just be me being ignorant but so far they seem to me more like a gimmick. However i thought I would point out a few of the most common arguments that are typically made in their favor.