Nice find, but the guy isn't a veterinarian.
The article on salt had no scientific basis. It is correct in that koi and goldfish should not have salt added to their water. Other than that, the author seems to be clueless what saltwater fish really swim in. Do not make the mistake that since sodium chloride isn't idea for pond fish that it shouldn't be used with other freshwater fish. Additionally, the article stresses that salt has no internal effect but blatantly omits external benefits.
And when a company stands to lose money because of an inexpensive treatment vs. their more expensive medications, you really should step back and ask yourself who they are really looking out for.
I'm not saying that they are an evil company or anything is wrong with their products. I'm just saying don't over hype what isn't so. And keep an open mind as to what you read. I am certain that they are a good company and it looks like you made a terrific find.