I don’t think that’s exactly his point. You can do this with many differences in the gospels like with the “last words of Jesus.” One can easily make up some way for them to coalesce into one cogent messege but that’s not what any of the gospels actually say.
Luke:
Jesus called out with a loud voice, “Father, into your hands I commit my spirit.” When he had said this, he breathed his last.
John:
When he had received the drink, Jesus said, “It is finished.” With that, he bowed his head and gave up his spirit.
Matthew and Mark say he had a loud cry and breathed his last but presumably there were no words in that “loud cry.” Matthew and Mark have basically identical statements as one would actually expect in a case like this with the last recorded words being:
Matthew:
About three in the afternoon Jesus cried out in a loud voice, “Eli, Eli, lema sabachthani?” (which means “My God, my God, why have you forsaken me?”).
Mark:
And at three in the afternoon Jesus cried out in a loud voice, “Eloi, Eloi, lema sabachthani?” (which means “My God, my God, why have you forsaken me?”).
At this point, what does one do? You can make up excuses for why they are different or use logic to combine them together in some way. But none of those is necessarily what Jesus actually said and there’s no way of knowing when we have such discrependcies. So you are left with, when under the presumption that the Gospels are recording history in the modern sense, a puzzle. But since history was different then, I don’t particularly think any of these contradictions actually matter. I came across an essay on the topic here in this thread a few months back and found it helpful: