The issue is there’s zero debate that something very close to QM applies to every single interaction between atoms. We glow in the infrared because of quantum mechanics so does a brick. Similarly chlorophyll works because of QM as does ATP, protein folding, etc etc.

The question is does any of the interesting counterintuitive QM effects apply to very large structures and that’s where humans being hot dense objects kills most of the more interesting bits of QM.

> didn't jump to conclusions

Thus people aren’t jumping to conclusions, QM itself is saying no here. For the effect people want to apply means QM itself must be wrong. That’s obviously possible but means you need a completely new theory of physics and evidence to support that.