Why does Google think the slowest animal is the sloth?

Firstly, Wikipedia doesn't have moderators, but admins. Their function is not to moderate article content, but rather carry out technical duties like page protection. They don't personally decide if an article should be fixed or deleted. They close deletion discussions in which the editing community reaches a consensus on whether an article meets Wikipedia's standards for inclusion. This is not based on quality or usefulness, but rather notability. [0] If you're dismayed at deletionism, I suggest participating in these discussions and making arguments based in Wikipedia's policies and demonstrating notability with sources. I do, and I've saved many articles in the area I edit.

In this specific case, the article was proposed for deletion (a step behind a deletion discussion) and no one opposed it. The reason wasn't just based on quality issues, but also notability and original research. If you're interested in improving the page, you can request undeletion. [1]

[0]: https://en.wikipedia.org/wiki/Wikipedia:Notability

[1]: https://en.wikipedia.org/wiki/Wikipedia:Proposed_deletion#Ob...