I agree with this. In addition, a mythicist (Marc Stéphane) has argued that the same rabbinical Jews were embarrassed by the possibility of defending themselves, against the Christians, by raising a direct comparison "YHWH versus Lord Jesus Christ" about who had to be adored and who had not. The embarrassment was caused from the fact that simply to raise the possibility of a such comparison between de facto two gods would have remembered too much the Hellenistic influence on Judaism. Something as: if you reject the Son of God as a Jewish deity, then you are admitting implicitly that the Jews of some year ago were NOT monotheists.
So it was better, from a rabbinical POV, to raise a contrast and a direct comparison "Jews versus the magician Yeschu".
So even the better candidates to raise "mythicist" accusations against the Christians, the same Jews, had paradoxically a partial interest to give their help to euhemerize Jesus, by describing him as a mere magician, usurper, etc.