Not extensively but I'm familiar with the ideas I think. To me it's almost similar to deistic beliefs where one tries to assign a god label to some foundational force in the universe, but in a way that doesn't add any information.
I just refreshed my memory with a Stanford philosophy page on him and I can see why it's appealing. A lot of his axioms make sense and I do believe (in an e=mc² kinda way) that there is only one underlying thing, which is energy. But to define that energy as god just doesn't add anything useful imo. Plus the whole "necessarily existing and containing all properties" thing is a stretch imo.