I do agree with you, Firebrand, a link to a website is not evidence.
It is, however, on this occasion, a substantiation by a reputable source that supports and reinforces the original point.
To take an analogy, I could state that E=mc², and provide a link to Einstein's theory. It would not be evidence that E does =mc². But it would be a support from a distinguished source that the point I was making is correct.
Similarly, if you could "post a link to a website that "Proved" all kinds of disgusting things about you" from a distinguished and reputable source, we might accept your assertion.
"I shall have my website man design one in the morning if you like" would not really be considered as a distinguished or reputable source!