Sure, but that could be said about any belief system depending on when you start the clock.
Not really? We don't have distinct points of creation for many faiths. With Wicca it can be set in a specific time and place. You aren't going to find Wiccans from 100 years ago.
Wicca is a blend of multiple different religious ideologies that existed in Europe at some point in the past. If you took someone from modern day Colchester in 200ce they might recognize parts of their ancestral faiths but parts will be from other tribes and peoples. Hence Wicca doesn't have an "authentic" set of beliefs as much as an intentionally created one. That's different from something like Judaism or Christianity whose views weren't created by people with the intent of creating a fait h.
Thelema was also intentionally created though they are unrelated as far as I am aware.
Wiccans are not a monolith. Some have claimed to be an ancient faith reborn while others are aware of the hodgepodge nature.