Are there any hard facts and clear causations why this is a bad thing? I've been hearing about it for years, but have yet to see evidence why it would be.
Correlation comes much much earlier in understanding effects, especially complex large scale long term ones like this. If we always wait for concrete undeniable proof, we will never avoid harmful choices, but only understand them after the fact.
And correlations are not orthogonal to causations. They can be spurious, but often they are not. Categorically dismissing correlations is as naive as categorically accepting them. The distinction you're making is more a type I error vs type II error. Which is a valid orientation but doesn't put you on the higher intellectual plane the tone of your comment is trying to claim.
And no, I'm not interested in correlations.