There are many Christians and Jews who believe that the Scriptures are allegorical rather than literal. Are they call God a liar? Are they God haters?
When Scripture speaks plainly, it’s best to interpret it plainly, rather than START with the presumption that it’s probably wrong and therefore needs to be interpreted allegorically.
When Scripture (including Jesus) speak of an Adam who sinned, it’s probably best to believe Scripture. Of course, you’re free to disbelieve Jesus. It’s a free country.