STRANDS OF NIGHT Before Whip of Erebos, there was Strands of Night and even after Whip of Erebos, there are honestly a lot of reasons to stick by this potent little enchantment
This is just terribly inefficient removal
According to EDHREC there are already 1751 Cosmic Spider-Man decks pre-emptively registered on the site
Plating is your big card, you main payoff for having such a high artifact count and your main threat even when you don't have it (as far as your opponents will be concerned)
Mechanics like flashback and disturb that allow a card to be played from the graveyard mitigate the effect of discard, but dont circumvent it entirely
This cost, however, isn't necessarily a disadvantage, as late game is when the heavy-hitting cards with huge Willpower come out to play