I think Lemmy has a problem with history in general, since most people on here have degrees/training in STEM. I see a lot of inaccurate “pop history” shared on here, and a lack of understanding of historiography/how historians analyze primary sources.
The rejection of Jesus’s historicity seems to be accepting C S Lewis’s argument - that if he existed, he was a “lunatic, liar, or lord,” instead of realizing that there was nothing unusual about a messianic Jewish troublemaker in Judea during the early Roman Empire.
Okay, now do Atlantis.
The “evidence” for Atlantis is Plato’s Timaeus and Critias, which is pretty clear in context to be a myth Plato is using to make a philosophical point. He’s not claiming it is historical, and it connects to Plato’s ideal of a “Noble Lie.”