If you downvote my scientific comments, please provide a coherent rebuttal. For example, the Great Oxygenation Event happened 2.3Bya (billion years ago), but tardigrades are animals, and animals date back to only 1Bya (modern phyla are 500Mya), so at least one mass extinction event (the GOE) predated tardigrades.

It comes as nitpicking; it should be obvious to even a small child that events outside something's existence couldn't have affected it.

It would be like if someone said "IBM has survived every major downturn in the economy" and then someone replies "not the Dutch tulip crash of 1637!".

OK at best this appears to be Hacker News comment policing, not legitimate (scientific) downvotes. understood, but disagree.

If you make scientific claims, expect people to be nitpicky. Scientists will take any statement you make literally, and evaluate it without thinking things are "obvious to even a small child". Many children think things are "obvious" but are scientifically wrong, and it's important to include enough context that the statement is both correct, complete, and useful.

Other organisms survived all the major modern extinctions (like tardigrades), but there are other organisms that survived even more.

The last universal common ancestor, from which all extant organisms derive, predates the Great Oxygenation Event. So, there is an organism that has survived all known extinction events. And its descendants survive today.

The cyanobacteria, and microbes that grow deep in the earth's rocky depths are both more likely to survive future extinction events, than are tardigrades.