It's far harder to create disk images on a real Amiga. The Greaseweazle and Kryoflux both make low level disk images so don't need to even read the disk format. This means you can backup and image any disk and its contents with be preserved, even if there are read errors or, as with many games, exotic disk formats that normal OSs can't read.
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Indeed and it's still such a great utility. But that only creates disk to disk copies, not rom files. These hardware solutions go much further because they create direct copies at the low level magnetic data level, so it doesn't care what format the disk is or how the data is written. It literally just makes an image of the data as held on the disk surface. So is the perfect archival solution.
This is now important now then ever. More and more original floppy disks are failing. They only ever had a life expectancy of 20 years max. Many are now 40 years old and it amazed me how many are still readable.
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