It’s just an article about Aztecs.
It is as if people were emotionally invested into this, despite this being hundred years old affair.
So yes, this matters because thread up there want to make adventure book out of this. It is not about trying to figure history, it is about treating it all as scary book.
You can have human sacrifice without it being impossibly large and without it being treated like adventure movie plot and without jumping on every fantasy anyone ever wrote - which is what up thread is. You can belive scientific consensus which is based on multiple sources and findings without making feel good stuff about conquest.
And while you are expressing outrage over exceptional kills, it is fine to ask who the source is. Because it does put things into context as it turns out the report is not by independent third party, but by highly motivated player in political and violent struggle for control.
That is discussing history without judgement. If you bring this as proof that Cortez was unfairly disbelieved, which people do, then it is absolutely relevant to bring why, the way he collected evidence and what his goals were. That is part of historical discussion too.
This whole discussion, meaning other (top) threads are primary about making civilization judgement. Except that, only Aztek (or communist for some odd reason) kills are allowed in that discussion. It is literally there, Europeans coming were clearly superior, because we don't talk about facts that break that nice vision - namely that potential victims of sacrifice ended up being tortured in order to extract evidence that they themselves killed people (or have gold).
So no, discussion turned into civilization moral judgement before me and at that point it is perfectly ok to discuss involved civilizations - or at least what they were doing at that time at that place.
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Offtopic: I think you can actually judge past people. You can judge Aztek priest, who is in it in part for own gain or cruel Samurai, Nazi leader or Colombus or whoever specifically. You should not however buy one of these guys woldview, just because he is our tribe remotely, and claim his self serving violence and treatment of commoners are fair due to somebody else's action.
Cortez him self was quite cruel, fond of torture - either when looking for gold or enemies.