No it should not hurt the titan. I don't even play a titan but it opens for every other super to hurt the one that uses it. Should blade dancer accidently stab themselves?
It sucks already that your own grenade kills you better than the other person and too close to a rocket whoops your dead.
I have seen that happen and very few times when my health is low and I panic shoot my arrow into a wall I killed myself. I don't think your own supers should hurt or kill you.
That's true that they shouldn't but they do. And until that it fixed, it's not fair that only warlocks receive damage from projectile supers. So why should Titan get to continually throw one shotting hammers that do no damage to themselves at close range when Sunsingers have not only cool down timers on their abilities, but they only one shot Golden Gunners, their grenades can do massive damage to themselves and they receive little defense buff.