Predictions have to start somewhere.
What bothers me about the comment I replied to was the hostility to trying to understanding the underlying mechanism. "As long as it does something beneficial who cares after all what the bias is?" is not a good position. That kind of thing leads to people doubling down when it turns out their pet hypothesis is actually shown to be wrong (not saying that's the case here).
It can also lead to people thinking they see benefits where none exist (or where the activity is even harmful), it can lead to people making up explanations (most of human history).
It's good to be willing to try new things, but also to have a healthy skepticism.
I'm bothered when something that is still uncertain is put forward as true, I think people are generally over confident where they should be less certain. Even this can be harmful in ways people don't expect [0].
It becomes really harmful though when stuff known to be false is pushed as true (conspiracy theories like not getting cancer treatment). This leads people to not pursue treatment they desperately need. In their case they won't have the opportunity to become more skeptical afterwards.
There's also the risk of political influence pushing certain things as true that aren't and real knowledge can be lost (though I think that's less likely to happen today).
In this specific breathing case, it's benefit being real or not is probably not that big of a deal - but the underlying value of wanting to understand why something is really true or not I think is important.
[0]: https://guzey.com/books/why-we-sleep/#the-potential-harm-don...
In older times yes, but you can easily demonstrate that scientific progress was WAY faster once we developed actual methods to test things in a reliable way.
It's ugly, but it's how we usually lumber along. And yes, many mistakes and pseudoscience take place along the way.
I was recently reading how jet engines were developed even though no one really knew exactly how they worked (there were theories, of course).
This is the closest thing I could find on the topic online:
https://www.rutgers.edu/news/failure-leads-tech-advances-say...