Having a crackpot opinion doesn't make her a liar.
But it does make her a crackpot and since I didn't call her a liar, maybe I think she makes an unreliable source because she is a crackpot. However, I would point out that if someone has difficulty dealing with truth when it comes to an issue like AIDS being caused by the HIV virus, what makes you think they can handle truth in other matters as well. As much as you like 'alternative facts' there really is no such thing. This lady is not just giving her opinion on AIDS nor is she presenting 'alternate facts'. She is presenting FALSE CLAIMS... and someone who presents false claims as truth is what...?
HBD
Whoever calls me ignorant shares my own opinion. Sorrowfully and tacitly I recognize my ignorance, when I consider how much I lack of what my mind in its craving for knowledge is sighing for... I console myself with the consideration that this belongs to our common nature. - Francesco Petrarca
"Nothing is easier than to persuade people who want to be persuaded and already believe." - another Petrarca gem.
Ignorance is a most formidable opponent rivaled only by arrogance; but when the two join forces, one is all but invincible.