I wouldn't call dark souls a waste of time, but you're right on this mod being tedious. Many mechanisms added by this mod are a pain in the ass and you haven't seen gun jamming yet (actually I think my zm66 rifle jams in the video but I was able to take cover before the dead marine can shoot me).
There are guns that need maintanace and ones which will still work after being damaged but will preform suboptimaly. As well as the way every gun is handeled, shotgun load shells individually then pump, revolver empty the cylinder then load the rounds, mag fed guns just swap the mag.
There's also the medical system, you see in the vid how I constantly stop to patch myself up. Actually there's two ways to medicate yourself when bleeding first is to use the second flesh applicator aka medkit, it's quick and easy but has a nasty side effect, second is bandaging it's not stable and wounds might reopen while you're on the move.
So yeah hideous destructor is hideous but it's the dark souls of doom. It makes everything count.