Um, waitresses can't have ugly waitresses, so "they" would be the restaurant.
And if you care about how good your food is, you really ought not be in Denny's.
(Frankly, I don't have a brief with the young lady. I think she did a fantastic thing. I just like bagging on Denny's in general.)
"They are the source of much that is soulless and wrong, and man oh MAN, do they have ugly waitress."
Of course you were referring to Denny's restaurant when you said "they are the source of much that is soulless and wrong,". I knew that. I was just teasing you about making a strong statement about what is soulless and wrong and blaming it on "they".
I can't remember ever eating in a Denny's restaurant. I don't know if they are any worse or any better than any other restaurant chain. We live in rural Alaska so the only time we ever eat restaurant food is when we go to "town". Eating at home is the best place to find good food. :) Anyhow, I'm sure Denny's is providing what their customers want, or they wouldn't have any customers. And at least the waitresses who work there, no matter how pretty they are, are working for a living and not sitting at home living on welfare. :)