All formats with a Commander have banned cards and effects that nullify the use of your Commander. EDH got rid of the tuck rule. Brawl banned Sorcerer’s Spyglass and Oko because they so easily nullify the commander.
What makes this format unique is it’s use of Plansewalkers as your Commander. Unfortunately, because of this unique gameplay cards like Pithing Needle and Sorcerer’s Spyglass too easily shut down your flagship card, the Commander. And at such little cost. Some decks are unable to recover from these 1 and 2 mana colorless cards.
I feel that to keep in this same spirit cards that so easily nullify what makes this format unique should be banned.