The downside is that it does very little to affect the board
If a replacement effect causes the milled cards to be exiled rather than go to the graveyard, this effect can still apply to the cards "milled this way" in exile
Those require a lot of work
The catch is it only works during upkeep
Trash for Treasure is a card with an iconic effect, but is special because that effect is often known better for being on other cards, such as Daretti, Scrap Savant, Goblin Welder, or Scrap Mastery to provide a more extreme example
David Bellinger, senior equity analyst at Mizuho, told that the market has moved "at such a torrid and quick pace" and carries "a little bit of a frothy bubbly aspect." Yet he also pointed to a stubborn foundation of genuine collectors people attending local card shows, completing sets, with no interest in flipping for profit that may provide a floor if speculative money eventually exits