There's a big difference to end users between "a robot walking around my house doing something" and "a human remotely controlling a robot and walking around my house". The privacy and safety implications are huge, and I cannot imagine that Elon Musk has the remotest interest in letting those points be heard.
They will never lift much. If they were strong enough to lift heavy objects they would be strong enough to kill you accidentally. There's no technology fix for that.
