Not the person who said it and I wouldn't say "never"...

But I will say that until we have a robot that can fold laundry, we won't have a robot that can go into your crawlspace and replace a chunk of crusty old galvanized pipe with copper or pex.

Robots have excelled, so far, in controlled environments. Dealing with the chaos of plumbing in a building that has been "improved" by different people over the course of a century is the opposite of that.