While I agree with humane treatment of prisoners, that's a very slippery argument. Every prison is technically inhumane enough to send some people to attempt suicide.
It’s not slippery at all. Life isn’t fair. Keeping prisoners means you’re responsible for them, and that means that sometimes you’re going to be responsible for problems. There doesn’t have to be a way out of this.
Make your prisons humane, don’t force-feed anyone, and accept the condemnation that occurs when one of your prisoners decides to starve himself to death anyway.
I read it as implying that all prisons are inherently inhumane, and therefore that nobody should be in them. But that's one of the problem with drive-by questions like that - you can't tell for sure what their actual point is.