To be fair if you play paradox without playing original story you miss out almost 99,9% of jokes
Not only the jokes, but also a lot of references and the overall story. Say, if you have never played the original trilogy, it will be weird for you when Nero says that Luka has no childhood friend and that Sonya shouldn't exist.
On the other hand, if you did play the original trilogy, you are already wondering beforehand who this "Sonya" is and you understand where Nero is coming for. Not playing the trilogy would just make it confusing whereas if you played it, it almost adds a horror aspect to it because you do know that she should not exist.