I think the point he was making is that it is effective in different environmental challenges and constraints. Not that it's optimal. So it might still be usefu

I think the point he was making is that it is effective in different environmental challenges and constraints. Not that it's optimal. So it might still be useful for building into a robot that's supposed to explore a environment(think space and planets for example). It may get relegated to academia, if we find other optimal solutions for our robots doing our boring chores though.