Mine is the drill that will pierce the heavens!
Now with that out of the way, that's pretty cool. I think it's interesting how the idea of a 10-million-light-year-tall robot was taken seriously in this way; given the comparisons with existing robots (in fiction and real life), I like how the conclusion that was reached is "it's unlikely but possible." It gives me hope that maybe, out there in the universe somewhere, there's something awesome like that hiding.