I don’t think that’s unreasonable on its own, whether it is here or not. For example, in a non computer scenario, wearing bicycle helmets is definitely better

I don’t think that’s unreasonable on its own, whether it is here or not. For example, in a non computer scenario, wearing bicycle helmets is definitely better for you if you get into an accident as the odds of injury reduces. However, the false sense of security may also make the wearer more reckless while riding their bike and potentially lead to more accidents. I think that’s the argument being made here. The false sense of security chroot may provide will lead to a person not hardening their systems as much if they weren’t using chroot at all, even if chroot itself does increases security.