I'm not passing judgement on this particular case; but that's a complete fallacy. "All sides" of every given debate are _not_ equally valid in all cases, and in certain cases it is disingenuous to imply that they are.
> regardless of consensus opinion among experts in the relevant fields
I can't understand this opinion? Could you clarify what you mean, because from what I'm reading, it seems you're implying that someone who is uneducated in a given topic's "side" in a debate is as equally valid as someone who is? That seems incorrect to me on the face of it, but I'd love some clarification, because it's likely I've missed some nuance here