Very inspiring article, pretty accurate, as far as I know. Usually what happens, or what has happened in the past, is that young COs who won't budge from their objection, eventually get released on medical/psychological grounds, sometimes following prison. I know at least two like that.
The army tries to discourage objections but to keep this low key - they certainly aren't interested in the world know about them or potentially start a mass movement. But the fact is, they don't really need a universal conscription. Many young people get out among the poor, among the rich and, of course, the ultra-orthodox religious.