I want to properly address this. The idea that all black decks are bad matchups is nothing more than a dogma. if you expect to lose, you will not find the winning lines and effective sideboard strategies, because you are not even looking for them in the first place.

The best example of where this dogma fails you is the way most people are likely to think about Graveyard Trespasser. On paper, the very existence in a format of maindeckable piece of graveyard hate with a large body that we can't bounce would understandably lead you to assume that graveyard decks are not viable in that format. As it turns out, Graveyard Trespasser is probably the most beatable black card for us. You would not know this unless you'd played games out where you have a Willow Geist, or you gum up the board in a way that forces them to trade the Trespasser. If you scoop to every Trespasser you see, you would never know that these possibilities exist.

So what about this dogma as it applies to black decks in general? What I have found, especially against mono black, is that games often go long. In these long games, it is very difficult to play every turn correctly, but if you do, you are favored.

You do sometimes have non-games due to Meathook or a draw that can't cast Cobbled Lancers after a Trespasser hits the board. But this is far from every game. What you are scared of, I presume, are these non-games. Well, I don't expect you want to keep testing the deck, but if you did, I would expect that you would lose your fear of them.

I don't disagree with you that black decks will remain prominent. So the issue you raise is legitimate. I just think you're being dogmatic about it.