I think you are being very dismissive there.
After all, the placebo effect happens in your body, which your mind inhabits. These are not two separate systems interacting by some magical means. This is one system with various subsystems that interact all the time.
Concrete mechanism of the placebo effect is still unknown, but the observation that your immune system can be influenced by your mental state isn't in itself magical. Our bodies respond to all sorts of mental states. We get red in face when embarassed, and sometimes must run to the toilet when scared etc.
All this "psionic" "paranormal" label stuff would only apply if someone could do it to other people without them even knowing.
Some people really do become spontaneously cured of diseases, yes - it happens all the time, and is something worth studying further. But the idea that the placebo effect is what causes it, is not really well-founded.
Somewhat notoriously some trials give patients a placebo that's actually another drug, as otherwise people could unblind themselves by not suffering side effects. The COVID vaccine trials did this. It doesn't make sense if you think the placebo effect only influences perception of pain, as otherwise you could lose the placebo entirely and double your statistical power (compare against a synthetic control group).
This regularly happens and nobody seems the slightest bit curious about why. That is, when you think about it, totally mad. I'd suggest it's got to be either:
1. The only psychology mystery worth investigating, or
2. A sign that clinical trials are actually mostly junk science
Either would be hard to admit.