Actually in real life, the onus of proof is always on the one who needs or wants or makes the demand for "proof".

You really want "proof", TIA? Do what I do. GEt off your butt, get out there and find it. Don't trust what others say, no matter how lettered or respectable or whatever. Go find it for yourself.

And if you can't be bothered going to all that effort, well then it's really not all that important to you, is it? And that's just fine too, as long as you don't bother people who have made that effort with "extraordinary demands".

I gladly share knowledge and experience gleaned through a lifetime of study and effort and experience with those who are honestly interested. By the same token, I'm certainly never obliged to relieve anyone else of their own ignorance.