One of the many argument against this theory is that Szabo is not much of a computer programmer, and Satoshi was very fluent with C++ among other skills.
There's Hal Finney, the creator of PGP, which was a good programmer, a cypherpunk, and died a few years ago. The fact that Satoshi has shown inhuman restraint in showing up or saying a single world since 201x would be neatly explained if they were dead.
I already talked at length about this, but no human would be able to keep their mouth shut and assets frozen if they were alive today and held a few billion dollars and spiritual reigns of the most controversial economic invention of the century. Not a single one.
Let alone with the best opsec ever seen not to be nabbed, identified or killed by any of the major intelligence agencies in the world.
Occam's razor.