I agree. No will of polemic, but it seems that Lena's mistake, in my view, is to assume that the Mythicists do 'the dirty work' for her: to emphasize again and again the silence of the sources on the traditional historical Jesus. It works with Josephus but it doesn't work with Paul. The silence of Paul about Jesus is so sound that Paul is a problem even for all the Zealot Jesus proponents. In fact, Paul polemizes against the 'different Gospel' of other Christians in Gal 1:8 but he says that the preacher of that 'different Gospel' may be even an 'angel from heaven': not precisely the figure of a Zealot Jesus. And even if that 'another Jesus' is allegorized by Jesus Barabbas in the fiction, Mark 14:26 is soon to give an anticipatory clue (''abbà, father'') of that 'another Jesus' by introducing the risk of the rejection of Jesus of the his ''cup of suffering'', by Jesus himself (not coincidentially, an ''angel from heaven''!).So I think in the end, your theory shares roughly the same probability of being true perhaps as the standard Zealot hypothesis or the 70s BC hypothesis. But that means it’s no more likely than they are. While I think the evidence renders another theory even more probable than all of those: that Jesus was a person only known mystically, and whose biography was in fact entirely made up.
But you recognize surely the irony that that 'blood' is purifier of the same people crying that.To the gospel author(s), their rejection of Jesus as their true anointed king was part and parcel of this bad decision making. No wonder there are lines like "Let his blood be on us and our children!"
When I see Celsus's tactic and especially Porphyry's tactic:
1) assume a historical Jesus
2) Take stricto sensu literally the Gospels
3) conclude that the Gospels are false if taken literally (because otherwise Jesus would be a Zealot, an Egyptian sorcerer, an immoral being, a crazy, etc)
I wonder: did Celsus (or Porphyry) choose that (apparently historicist) way of polemizing to move the Christians to the unique other alternative: to recognize that their Gospels can be true only if taken allegorically ? And therefore read rightly only by few insiders?