To be sure - God and creation being indistinguishable isn't something that Spinoza would agree with either. Two relevant items here.
One is that God has an infinite number of attributes, only two of which are extension and thought (the only ones we can know). All physical things are modes of the attribute of extension, and all "mental" things are modes of the attribute of thought. So if creation just means the set of all physical things (or even "mental" things), these are just the set of all modes of extension, an attribute of God, (along with the set of all modes of thought, another attribute of God, if you include mental things). But these are but extension and thought are but two of the infinitely many attributes of God.
Two is that Spinoza draws a distinction between the set of all of the modes of the attributes of God (Natura naturata) and God himself (Natura naturans). (See the Note of Proposition 29 of Part 1 of Ethics.)
So if by pantheism we mean that God is nothing but the set of all things, Spinoza does not seem to be a pantheist.
That isn't to say that Spinoza is just a perfectly orthodox theologian, of course, but just that reducing the radical nature of his theology to the word "pantheism" (construed as creation and God being the same) appears to be an oversimplification.
(Also, minor note, in the last comment I said Leibniz thinks God actualizes the best possible worlds, that's a typo, I meant the best possible world, singular.)
One is that God has an infinite number of attributes, only two of which are extension and thought (the only ones we can know). All physical things are modes of the attribute of extension, and all "mental" things are modes of the attribute of thought. So if creation just means the set of all physical things (or even "mental" things), these are just the set of all modes of extension, an attribute of God, (along with the set of all modes of thought, another attribute of God, if you include mental things). But these are but extension and thought are but two of the infinitely many attributes of God.
Two is that Spinoza draws a distinction between the set of all of the modes of the attributes of God (Natura naturata) and God himself (Natura naturans). (See the Note of Proposition 29 of Part 1 of Ethics.)
So if by pantheism we mean that God is nothing but the set of all things, Spinoza does not seem to be a pantheist.
That isn't to say that Spinoza is just a perfectly orthodox theologian, of course, but just that reducing the radical nature of his theology to the word "pantheism" (construed as creation and God being the same) appears to be an oversimplification.
(Also, minor note, in the last comment I said Leibniz thinks God actualizes the best possible worlds, that's a typo, I meant the best possible world, singular.)