cis (as the prefix in cisgender) is literally just the Latin term for "on this side of", opposite of trans = "on the other side of".
It's the exact same thing as heterosexual & homosexual, both from Greek, standing for hetero (from heteros) = different, and homo (from homos) = same.
Is the term "straight" also not ok, just gay people and "normal" people? And same for homosexual and "normal" people, and trans and "normal" people?
Dozens of species go extinct every single day, in large parts due to deforestation for animal agriculture. Acting like keeping a handful of species we eat from extinction is somehow noble is silly by contrast. The concept of a species is a human construct in the first place, individual animals don't care that their species (which isn't even natural, we bred them like this) is kept going.
It's not about if those animals live under animal agriculture or in the wild. The animals in the wild already exist, the ones in captivity wouldn't exist at all, if we didn't breed them.
Most animal meat nowadays comes from factory farms. Worldwide it is roughly 90%, in the US it is 99%.