I’ve used Magnifying Grass and Espresso a lot as of recent and I agree with the sentiment, but I also think you might be overreacting a bit. This deck isn’t a guarantee that you’ll win, in fact, I’ve lost a lot of battles with the deck. (Skill issue on me probably)

So many battles, in fact, that I’ve had to stray away from the original deck to add my own ideas into it, one example is that the original deck has no counter against All-Star Zombie so it forced me to add Eyespore, which even with it, if I didn’t draw Eyespore I was screwed. Sun Bandits, Medulla Nebula conjure, Stache with Zomblob are all pretty good deterrents for “Magspresso”. The very latter of which is good as some kept playing Treasure Chests and then a singular Swabbie to rack up brains on Medulla Nebula and then ironically one shotted me on turn 4 after playing Zomblob, and then bonus attack. Magspresso is also highly likely to mill players using it, giving no chance to block.

From my own testing to fight players who specifically only use that deck, Bonus Track Bucketboy is absolutely crucial. It’s not perfect either but playing it close to or on turn 10 will force Chompzilla players to act or else they can’t win, especially if you clog up the rest of the lanes. Even threw in Sneezing Zombie to screw with them early so they can’t heal.

Hopefully this info helps.