Alphazero plays very differently than a human, and you can analyze if the player is playing the same moves as it, just as well as you can with another engine. Less importantly, modern stockfish also uses neural networks.
Nobody has access to alphazero as far as I know. Regardless, it is an interesting point. The TCEC has a ton of oddball engines, many probably open source, that are virtually unknown but are still far stronger than any human. Could make sense to choose one of those if you don't want to be caught.
