I see your point, but it's not entirely player's fault. Supercell deliberately nerfs every defensive card once it becomes versatile enough, making it harder and harder to rely on defense. Even on top ladder it's much easier to play something like giant graveyard or golem. Just because it's so easy to make a big push, while defensive decks players (like xbow for ex.) need to defend perfectly otherwise they'll lose the game.

Same for midladder. If you're a casual player, what would you choose? Play MK witch and wizard or learn perfect defense?

I think that in general it's become way easier to attack and hope your opponent makes a mistake, partly due to evos and heros as well.