Because if you're wrong about one thing, you must be wrong about everything!
This applies to other modern medical procedures as well.
Are they really experts?
Experts at what, exactly?
But I think only certain experts are allowed to be trusted.
And the experts to be trusted are determined by people who are not experts.
It's confusing.
It's like there needs to be an expert on experts. But then we would need an expert on expert on experts to know which expert on experts to trust.
So it's pretty confusing to me.