My intention was not to promote the action by posting it.
I just saw it was different and myself never would have thought of doing it.
I too agree that it is not sportsman like, yet don't see anything disgusting about it.
When I was a kid on summer vacation in a village north of Tehran, me and two relatives used a bed sheet to catch fish in a small creek nearby.
Two would hold the sheet across the creek. One side on the floor of the creek and other side above water. The third person would scare the fish with a stick in the water coming downstream toward us. When he got to us, we would lift the side of the sheet that was under the water. If there was any fish, we would get it when the water drained from the sheet.
Long before I caught my first trout with a rod, reel and worm.