The relationship of existentialist paganism to other paganisms

i think the ancient pagans would have recognised 99% of people who call themselves pagan today

my starting point is that the gods exist, and everything flows from that... in terms of what are 'valid' and 'invalid' beliefs.  rather than 'this point is history was when people were doing -real- paganism and deviating from it is paganing wrong'. but if you just want to worship nature, or be a human in the world, or think of the gods as archetypes in your skull, you're like 90% of the way there anyway.
or think the gods are reflections of some deist conception of the overgod or whatever, i'm never going to agree with you, but it's not like a cause for rejection