Sounds just like my grandfather defining fishing to me...
My methodical (and highly successful) catching of fish by pulling salmon out of a lade at the top of a waterfall with a baling hook wasn't fishing... Exactly the same as me dangling a hand line over a bridge wasn't fishing... or running a line full of hooks from one bank to t'other wasn't fishing... or tickling trout from under rocks near the bank wasn't fishing. All of those methods of catching fish were
poaching...despite all of those methods of
fishing being generationally passed down to me from my grandfather after his continuous efforts to educate me in the gentlemanly art of fly fishing ("You're doing it wrong, boy!") failed miserably.