I'd probably stop short of calling this an ethical thing -- it's more like a personal preference thing. If it's legal and doesn't hurt anything, it's up to you. Life's too short to get worked up over other people's methods. If they're interfering with your fishing, just head over to see Yakov, or the Abba tribute band, or Shoshi, or Ray Stevens, or little Jimmy Osmond, or the Mandrells, or Mel Tillis.