The problem with the cards on the ban list though is that they created an unhealthy game state with little to no effort.
Deliquent needs so many tools dedicated to it, least to mention that their main attacker doesn't really deal that much damage in the first place. Add in that you can prepare yourself on your turn if you win the coin flip (i.e. by benching an Oranguru), or that in Expanded you have access to VS Seeker (in a scenario where you have to choose between discarding the draw supporter or the Seeker you always want to discard the first one). Additionally hitting Deliquent + Peeking Red card out of Marshadow (if they are missing the Red Card) isn't guaranteed in the slightest.
I should also point out that people probably concede against this deck way too fast. Sure, there are games where you are simply left with no draw for all eternity, but the more common scenario that I've experienced so far is that you are maybe bricked 1-2 turns, and then can start your own engine. While this probably means starting with a disadvantage in the prize count, the lack of any real thread from Glaceons side makes up for this quite nicely.
Again, bad draws happen and sometimes the combo will be enough to finish you off, but that's no reason to ban a card, unless it happens consistently in every game.
The shadows of the abyss are like the petals of a monstrous flower that shall blossom within the skull and expand the mind beyond what any man can bear, but whether it decays under the earth or above on green fields, or out to sea or in the very air, all shall come to revelation, and to revel, in the knowledge of the strangling fruit - and the hand of the sinner shall rejoice, for there is no sin in shadow or in light that the seeds of the dead cannot forgive...