Don't forget also that His early followers taught that He rose from the dead and they saw Him alive.
Yes, good point. We know that, in the case of Paul, these appearances were almost certainly a form of transient mystical psychosis, since the language he uses to describe it is the language typically associated with visions and prophetic dreams.
Given how he was accepted as somewhat authoritative in his time, and perhaps even earned the respect of James and Peter, I wonder how much the resurrection could be attributed to bereavement hallucinations that were interpreted through a spiritual or supernatural lens. It's not unheard of for cultists to believe they're still receiving messages from their leader after the leader has passed on, after all, and that's often due to religiously interpreting normal grief experiences.
Supporting this is the fact that we know there was significant disagreement in early Christianity regarding whether Jesus was resurrected in a physical body or a spiritual one, with many Gnostics going so far as to say that Jesus never returned to the material world at all and merely projected himself into the minds of his followers. This was a narrative that was heavily condemned by Christian heresiologists, so most believers today are completely unaware of these groups, but there is some reason to believe that this Gnostic interpretation may predate the gospel accounts.
Personally, I don't believe the Gnostic interpretation is the older one as some historians have argued, but it is pretty clear to anyone who isn't already Christian that there was no resurrection. People don't come back from the dead and myths aren't reliable sources for extraordinary events. As such, there is such an extremely low prior probability of a resurrection that believing these early claims would commit the Base Rate Fallacy.
Figuring out what actually happened requires sifting through quite a large number of unreliable sources and that's part of the reason why historians are still so divided on what the historical Yeshua was like to this day. Obviously, no serious historian gives credit to the resurrection, but the fact that his followers claimed one just demonstrates the low quality of historical evidence we have to work off of.
Due to this, I'm not sure I would assert the above narrative in a debate thread since any position on a historical Yeshua is shrouded in speculation, simply due to the nature of the evidence being interpreted. It's fair to question whether there was a historical Yeshua at all, given that the savior narrative is common to "cargo cults," although I think there is strong evidence that he was real to some degree.
However, as speculation for a Q&A thread and an honest account of what I think is the most plausible alternative, this is far more in accordance with the evidence than Jesus being divine or the messiah, in my opinion. It at least serves as a good enough starting point for understanding the historical Yeshua who inspired the mythical Jesus Christ, so long as one is willing to modify this interpretation further in light of new evidence or superior argumentation.
So, yes, the resurrection is important to note because it shows just how out of touch with reality early Christians were. That seems likely to be caused by the way they were conditioned to interpret the world around them through a religious lens, which seems to have been heavily influenced by their charismatic leader. We would expect followers to attribute extreme feats to their cult leader, since this is incredibly commonplace in cults, so the resurrection fits quite neatly into this interpretation.