Asking for any evidence is appeal to perfection? Or saying that it's unreasonable to demand an extraordinary, serious, world-impacting claim be disproved, while

Asking for any evidence is appeal to perfection? Or saying that it's unreasonable to demand an extraordinary, serious, world-impacting claim be disproved, while simultaneously not supporting it with any evidence? Also, I'm just saying any evidence that anything may have escaped by mistake; not that it was intentionally spread. Sure, CIA and such can discover such evidence much more effectively than any commenter here, but in that case, shouldn't you let the CIA / US government make those accusations instead of a random commenter who has no knowledge of the situation or basis for their claim? >China has hundreds of documents of this base and backgrounds on all scientists, which it can release to no detriment at all, supposing the lab had nothing to do with corona. What documents, exactly? And how would that help disprove that the virus inadvertently escaped from the lab?