I agree. If they weren't making money, they'd go bust, so clearly someone likes the "burnt coffee". It's odd how some posters (not you!) Will act like an obvious opinion is to be taken as fact, and not acknowledge that some people like a certain taste. I mean, some people like super salty anchovies, but I abhor them, but I don't tell the anchovie lovers that they are incorrect.
I think it's because people that complain about "burnt coffee" (me) are people that take their coffee black and probably brew it at come.
Meanwhile, people that don't mind "burnt coffee" are the people that preferred coffee-based drinks from coffee shops. If I get a salted caramel mocha Frappuccino with two pumps of hazelnut - burnt beans are probably the only kind of beans I will be able to taste in that drink.