Turrets, walls, player made/deployed objects. Should they remain after player death?

So playing the game I am huge Barik fan, one thing I find a little odd is that when he dies all his turrets and his barricade instantly disappear. However, if you kill a skye when her bomb is down it will still detonate.

How is one different from the other?

I believe Buck's wall also disappears on death.

What do you guys think? Is this fair should everything disappear or everything stay?