Good in theory but not in practice. This is my industry, and I feel confident that for house building in Melbourne this is a pipe dream.
House blocks are tiny these days. It’s rare to get a job that’s has good access for humans, let alone a big machine. Also, houses don’t really have big walls anymore. A standard garage wall is 27 bricks long. The rest of the house has windows and corners which I imagine would be difficult for the machine to negotiate.
It could possibly be used for apartments or factories, but I imagine concrete panels would be faster and have more load capabilities.