To be fair some people rent places with really old dishwashers.

That's my case. My old place had a brand new one and it did everything perfectly. My new place has one that's pretty old and not only does it need a pre-rinse, it doesn't even dry things (and unlike my old one, it needs a rinse aid)! And if it breaks, I'm sure the landlord will replace it with an empty area under the counter.

I think older dishwashers are more likely to have built in garbage disposals which is actually a huge win. On newer dishwashers one of the biggest problems is that people don't clean the filter regularly