Dunno, even the canned ground beans had an obscure content; not the fine, very dark brown coffee powder we've over here, more beige and grey particles, like ground tree bark...
And that you hardly find just plain coffee was also weird, but loads with almonds, walnut, hazelnut, strawberry, cherry, plums, apple, etc, etc... aroma added...
I want coffee, not a potpourri...
Worst where fast-food joints though... those cans must sit on that heating plate for ages... burned like the sludge they serve on airliners...
Boiled, Turkish style coffee is also a tad harsh, especially if the person preparing it doesn't have a clue... (only once in my I got a good tasting one over here...)
And I completely got off drippers decades ago anyway... too much acid, heartburn, etc... and the time it took every morning...
Nespresso capsules are great, no issues, can even drink that in the late afternoon/evening without any regrets... quick, always the same quality & taste...