I mean... yeah that does happen.

I've caught a shark on accident, and pulled it in so I could remove the hook and release it. I don't find it fun, but it's better than just cutting the line and leaving a barbed piece of metal in the animal.

I also don't generally practice "catch and release" fishing. I fish for food (mostly crappie) because I think catch and release is just being a dick to fish for no reason.

I don't go to the ranch and shoot deer in the leg, get a few pics, then send it onnits way, so why would I do the same to fish?