Percentage HP based damage

After the majority of my RIPs now to corspe explosion, I have come to the conclusion that it's slightly broken.

I was just speeding through on a lvl 23 dagger shadow, in city of sarn. Came across a standard lockbox, IDed it, activated, Vaal Reaved, instakilled everything. Boom, I'm dead.
No rare pack, no reflect, just standard white mobs.
pop pop pop pop pop, How does a melee character deal with this? the mobs deal a minimum of 10% of their hp in damage. this would mean to survive, I would need 10 times their hp for 10 mobs.

In maps, where larger mobs often have 30k+ hp, two mobs exploding would instakill you. This % based damage is completely stupid.

What makes this more annoying for me, is that lockboxes cast VAAL detonate dead. The majority of players I see, dont even check for reflect on boxes, as they arent troubled by it. they just pop and nuke.

It completely slows the game down having to pull mobs away from a box in order to avoid insta RIP.

This is currently the only mechanic/affix which I experience trouble with on every class/build. Surely others agree.

I've never died to a corpse explosion ever.

Usually very cautious if something has a very high amount of health and something is corpse exploding means I either Devour totem it or blow it up myself or...drag it out of the way.

In terms of boxes I usually smokemine or teleport out

Dagger builds have an awesome skill available to them: Whirling Blades. You can use it to zip across the screen and - desync permitting - avoid dangers like exploding corpses. Or detonate them yourself before the box gets a chance to do it. Or kill them with a skill that doesn't leave corpses in the first place. Or freeze/shatter them.

The game gives you all these tools, wish people would actually use them instead of crying nerf because they can't mindlessly mow down everything.

I've died many times to this. Smoke mine doesnt help because box is waiting till you step near the corpse to detonate you. You can wait forever for detonation but it wont detonate if you dont stand on a corpse