Perhaps this is a matter of opinion. Damage numbers are easily tuned and changed but gameplay is a much more complex matter. Something that is fun to play but does low damage can be fixed in a day. Something that is un-fun to play but does massive damage, cannot.
If doing trucks of damage is what makes a spec/class fun for you, then you do you. I think damage dealt is a silly measure of fun.
I’m afraid my point might have been missed. I’m not suggesting damage is irrelevant. I’m suggesting the relevance, again, is in the gameplay. Fast-paced Voidforms are fun, slow ones are not.
Obviously, the damage needs to be competitive. What I suggested above is the method by which Voidform deals its damage.