No, this isn't a generational thing, if you don't see the problem with trashing someone's house (let alone doing so to the tune of $12k) that is a comment on your values alone.

> refrigerator shelf was cracked ... broken glass or dish ... wooden nightstand drawer was chipped

But why don't they take the same money and get a cheap industrial unit and build some mock rooms up. Surely it costs the same as hiring and subsequently fixing peoples houses.

If I'm supposed to buy a robot to clean my house, I personally don't want to have to go looking for where the stupid thing has put my cups and plates or whatever whenever it straightens up. I expect there to be a place for all the things and all the things to be put back in place. That's not "er mah gerd the world is ending because millennials am I right!"; that's "your idiot robot can't do the one job I bought it for".