Nobody should be taken down riad boss in under a minute or one shot r10 dooms.
I agree that no one shout be able to solo oneshot r10 dooms, but to be fair, r10 dooms have been outclassed by top builds of all playstyles archetypes. Healers can kite them forever, tanks can avoid getting hit by them, melees can kill them before they die in a 1v1, ranged can kill them before they get to them, etc.
They don't chain enough, they're too fat for doorways to get past a hobgoblin or past small doorways, they're slow and silly and only moderately threatening even if they get to you. Famine/carnage slow, plague antiheal, fear aura, despair aura, veng casting are all more threatening things albeit easier to kill with cc/aoe. The only thing going for them is that they are CC immune.
Dooms are not the threat - nor the tank - that they once were. We have outstatted and outsmarted dooms long ago.
Sorry for the derail; just that the doom example is more descriptive of an issue with dooms, not ranged.