Yes, actually you DO endorse the creation of things when you purchase or use their services.

I'm not going to be harangued for being an omnivore who's against factory-farmed chickens. You can lump me with the rest of the meat-eaters if it makes your feel better, but I'll have you know I don't purchase or use their services from those I find objectionable. I make no apologies for having a different moral scale, or liking chicken as a protein source.

Considering you have options, one could argue that you must be okay with them, otherwise you could just choose to not support them. I personally believe there's more nuance than that, but Ive heard that line of argument before.

Yes. You are absolutely responsible for killing animals if you eat meat.

Decision-making must be easy when you see the world in black and white. From where I stand, not all killings are equal.