You're trying to play a semantics game here. Sure the root of pan means all or every, but the actual term was coined by Toland to describe something specific, part of which was outlined by Spinoza. I never implied that it was monotheistic, but there are Christian Pantheists out there. Yes, it is a dicey proposition, but I don't find it any more egregious than someone who says the are a Pantheist/Atheist.
If we are all our own Gods, that would only be in thought and action alone. Again, you are trying to twist semantics. No one would confuse the universe God with you personally being a God.
Yes we did evolve from the same materials, but a Pantheist universe assumes that the materials are presently the same.