The problem is that it's bullshit. Or rather, poisonous radioactive catshit. Schrodinger designed his nuclear-animal-cruelty Saw-prequel to be so obviously stupid that it would reveal the ridiculousness of applying quantum mechanics, meant for super-small-scale stuff, to larger objects. His original description of the thought experiment is dripping with sarcasm (and panicked cat urine), but people have been teaching it as the real thing for decades because it sounds so Inceptiony and scientarded that it must make sense.
original E. Schrodinger, Die Naturwissenschaften, (1935)
translation from Proc. Am. Phil. Soc, 124, 323-38 (1980)
Science hadn't invented winking emojis yet, or he'd have used them
See, quantum mechanics is meant to describe quantum things, and quantum things are wee tiny. Above a certain size limit, we don't see quantum effects. That's why it took so long to discover them. That's why we have non-quantum physics -- or as we used to call it, "physics." Regular ol' normal physics, which is recoiling in horror at your feline torture. That's why Schrodinger used cats in the first place: to make people pay attention to the obvious ridiculousness of the result. Which means a genius quantum scientist was the first person to use cat memes to mock something he thought was stupid. He mastered the internet and the core science required to make it possible before it existed. It's the smartest LOLCAT ever derived.
NAO LET ME OUT POISON!!!