He is saying that things that are not actual, yet “possible”, are exactly the same, as far as the universe is concerned, as things that are not actual and not “possible”. Specifically, they are all nonexistent. Hence possibility is not fundamental in any ontological sense.
But the laws of the universe demarcate possible things from impossible things: so can you dismiss the reality of possibilities without dismissing the reality of laws?
But the laws of the universe demarcate possible things from impossible things: so can you dismiss the reality of possibilities without dismissing the reality of laws?