I wholeheartedly agree that those robots are not anywhere near the potential functional capacity of any given human. The thing is, it doesn't have to be on the same level as a human. It just needs to be smart enough to do laundry, cook an omelet, and water the garden, check the mail. Things my (hypothetical) 95 year old grandma can't do any more. Things that well-to-do people already pay a maid and landscaper to do.
Market niches like that are where this new tech will gain a foothold, and after that it'll cascade down through the rest of the economy.