Alex O'Connor, also known as CosmicSkeptic, is a YouTuber, writer and podcaster. He speaks and writes regularly about his atheism and used to speak and write about his veganism.
In this video clip he says: "I don't like calling myself a Humanist for the rather controversial reason of not thinking that we should just put humans at the basis of our ethic and morality... I would call myself a subscriber of... there's this new term going around... Sentientism" but says "if it wasn't such a terrible term that just doesn't roll off the tongue and has no wit about it - then maybe I'd call myself one... there needs to be a better word for that."
Since then he has resumed his consumption of products made from sentient animals so seems to have withdrawn his practical moral consideration from many sentient beings. He remains opposed to "factory farming".