Americans tend to over-roast coffee. even the fancier, little coffee shops priding themselves in roasting their fair-trade coffee etc do that often enough. i think i must have seen 80% of those in chicago and often enough the coffee has a bitter after-taste.
It is the Starbucksization of coffee and the snobs who left Starbucks still do it. Once you add tons of milk and sugar and flavoring to "coffee", the over-roasting allows the "coffee" drink to resemble coffee a little.
The snobs once no longer drinking coffee drinks still find themselves needing to burn the coffee to put off sane person from joining their clique.
I go to Dunkin' Donuts, White Castle, etc. for coffee. They manage not to serve me what tastes like acidic, low body, burnt cardboard.