Even if true (which is not) this is fallacy at core. It goes like this: A- You're doing X which is inhuman B- Common! C is also do it, B has done in the past

Even if true (which is not) this is fallacy at core. It goes like this: A- You're doing X which is inhuman B- Common! C is also do it, B has done in the past as well *So we can do it too* and *magically* that's get OK *as consequence*. This is a pure fallacy.