It's become obvious over time that one of Trump's primary strategies in life is assigning his failures and faults to other people. He lives in a sort of permanent fog of projection.
I wonder who he's trying to fool though. It's so constant and seemingly effortless that I suspect that it's really mostly for his own benefit - that it's not just the story he's telling other people, but the story he's telling himself.
Same people he has been fooling for years. The fanatical MAGA believers and everyone on the right who subscribes to the whole, "If it doesn't fit my narrative, it is fake news."
"Strategy" implies he actually thinks about it. I think it's just a reflex; fault belongs elsewhere, always. The man is incapable of critical thought, especially inward.
His extreme narcissism means that he is mentally incapable of seeing himself as anything other than the most perfect example of trump, and everyone else is either an extension of him (his direct family) or they're just things to be exploited.