If recruiters for hitmen and assassins were everywhere and reached everyone easily, I still wouldn't sympathize with those who thought its a good idea. Even if the recruits were spreading propaganda, I will judge anyone who falls for it.
Do you apply the same logic to those who join islamist terror organizations? Most of these organizations use even more propaganda tactics. They prey on troubled young people and convince them that they are embarking on a righteous mission. Their propaganda is even more powerful as it relates to religion, which is closer to one's heart than patriotism typically.
At least in the military, you will immediately see that whatever they promised you is wrong. You'll immediately see you're attacking other countries that aren't a threat to your people. Terror organizations will still see people they were convinced to be sinners, standing in their way of establishing the kingdom of God.
I don't sympathize with either