The Galaxy S8 and S8+ had scrolling screenshot 3 years ago...
Rolling screenshot certainly comes in handy and perhaps not everyone is aware. An example of Samsung being ahead of the game in some regards.
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My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .
Not a Samsung feature but rather, it was introduced in one of the Google Android builds, 8 or 9, I think. Have had it on my OnePlus 6T for about 2.5 years.