It’s been a nightmare seeing tech companies move into the utility space and act like they’re the smartest people in the room and the experts that have been doing it for 100 years are morons. Move fast and break things isn’t viable when you’re operating power infrastructure either. There’s a reason why designs require the seal of a licensed engineer before they can be constructed. Applying a software development mentality to any kind of engineering is asking for fatalities

They’re mostly not being used for that and they come at a huge cost

Without spoiling too much in the book he isn’t muscley on earth but is once he is in space for a well explained reason. However, he’s also meant to be clean shaven in space due to the same reason and it looks like they’ve changed that so who knows.