Sorry, that's a bit hyperbolic on my part. There's so many old wive's tales out there about how to deal with onions. People try to solve it as though the tears were magical and not caused by (relatively) simple chemical reactions.
If you refrigerate your onions, you might be fine for some amount of time and you'll be lessening damage and it's going to help but not solve it at volume (cut one onion, you're fine. Cut 100, not so much).
Don’t know why everything else would automatically be bunk.