In that instance, the claim is "There is evidence of X problem"
They then provided the evidence of that problem and were ignored, the burden of proof was on the person making the claim that there was a problem, and there was a problem, they provided proof, and were ignored.
This has nothing in common with the previous scenario.
That's making a positive claim about a negative outcome. "There is enough evidence to be confident there aren't structural problems" is what they're really saying.
This doesn't work for god because there's nothing to check, there's never been any evidence for god, but there's been plenty of evidence for structural issues existing.
The second one is wrong, there is no god is not a claim that requires evidence in the same way there are no fairies in my fridge doesn't require evidence
I can't see the paper on that page, just the image, is there more to it than just the image and the claim?
What snakes have they checked?
edit: I think this is really about identifying rattlesnakes, more than about identifying venomous snakes in general. There's two counterexamples on the "anal scale" page of wikipedia
It's not even an indicator, there's places where the opposite is true, this is like the myth of the vertical slit pupils meaning they're venomous, there's no actual correlation, this just coincidentally works in areas with few snake species, but you'd have to know that ahead of time, and since there's few species wherever this does work, you might as well just learn what the venomous snakes look like so this is practically completely useless.
This usually happens when somebody learns that in their local area this rule applies, and then assumes it applies everywhere.