No one in the academia buy this crap. Only ignorant atheists do. See the following video: it is compact, straight to the point, and well sourced.

https://www.youtube.com/watch?v=s0-EgjUhRqA

Otherwise, see the following explanation from one scholar, NT Wright:

There were ritual enactment of the death and rebirth of gods, coupled with fertility rites. Think of Adonis, Attis, Isis & Osiris, Dionysius, Demeter and Persephone, corn-kings and corn-mothers, Balder the beautiful, son of the great god Odin. The myth accompanying this was indeed the story of resurrection, but the objective of these ritual re-enactment was to guarantee crops and offspring. The productivity of the soil, tribe, or nation, was at stake.

Did they actually think that any particular human beings would resurrect? Of course not! These cults enacted the god’s death and resurrection as metaphor referring to the cycle of seed-time and harvest, human reproduction and fertility. Even as in Egypt where people aspire to become united with Osiris after they die, did not expect the mummies to return to get up and resume normal living.

The Jewish world into which Christianity was born, though influenced by Hellenistic ideas, had no sign of dying and rising of gods and goddesses. They did not expect YHWH to die and rise again. Neither did they expect their own final resurrection to be cyclical, again and again. Christianity told a very different story; even the symbol of ‘bread’ was only used tangentially.

Of course, pagans may fit the Christian message into their worldview, but they would be more likely shocked or puzzled. When Paul preached in Athens, nobody said, ‘Ah, yes, a new version of Osiris and such like.’ The Homeric assumption remained in force. Whatever gods – or the crops – might do, humans did not rise again from the dead.