icemelter, if you dont want to support something that is your headache. Halacha allows us to kill animals for fur or any other use even if not for food. The Gemora in Chulin talks about that including killing a bird because you need the blood for something. You could kill animals for that.
As far as grafting, that is assur for YOU to DO, but there is no issur on you to buy klayim fruit. From what I understand many species of fruits we have nowadays began as klayim.
As far as peta yemach sh’mom v’zichrom, those mishiguim are against killing ALL animals no matter what. They play with videos to make them look bad or even worse. They have a Box Seat awaiting them in gehennim.