Lol. Did Aristotle live?
The earliest copy of one of Aristotles manuscripts is from 1100 A.D. (1,400 year time span).
40 years is considered amazing attestation by any legitimate historian's standards.
Jesus being a real human being is a fact corroborated by any real, serious historian. Please don't spread this nonsense.
You're conflating "latest established copy" with "originally written".
It's not like Aristotle's manuscripts were first written in 1100AD. They were written much earlier, but this is just the latest copy we have. This is different than St. Paul writing about Jesus decades after he lived. It's not as if we expect an earlier copy: St. Paul never met Jesus in his time.
Usually, I'd expect people to compare the historicity of Jesus to that of Socrates, not Aristotle (who was Alexander the Great's tutor, near impossible to fabricate and definitely a figure who made waves in his time). Socrates was only written about by Plato who was preserved by the prominence of Aristotle, so people like to say "do you doubt Socrates exists?" But even then... Socrates was referred to by two different sources (Plato by way of Aristotle and Aristophanes). Even Socrates made a dent in history enough to be mentioned by two separate contemporary sources.
Would I expect an obscure cult leader like Jesus to have more contemporary sources? No. But just know that who we are dealing with: an obscure cult figure. The "certainty" we have about Jesus is not as solid as conventionally understood, and is certainly bolstered by his later religious importance in society. The whole "all historians say.. everyone knows...." sentiment about Jesus is derived from cultural bias. His existence could certainly be questioned.
But again, I take the echoes of his existence to mean there was a run of the mill cult figure behind it all. It's simplest. But that's an inference based on the murky history of this character... not some witness of the obvious facts. Because nothing is obvious about a man written about decades later by one cultic source.