He's got a point

Also the priest in the joke is wrong. If you don't know the gospel, you get taught after you die. Your character sticks with you, though, so going "lalala, don't wanna listen so I can sin now and learn when I'm dead" is a good indicator of refusing to listen in the afterlife too, and then yes, you go to "hell" (well, more like you go to heaven but not the best heaven. Like winning a million dollars when the grand prize was two million dollars and a speedboat.) But basically, you're going to learn sooner or later, so might as well make it sooner and get a head start.

he never would have known. he wasnt avoiding it, he didnt even know it existed

That part was just accounting for the case of "so if I make sure I never learn the law, I am exempt from it" attitude, not specifically aimed at the joke. My bad for pre-emptive defending. In the case of the hypothetical situation of the joke, it'd go "if I didn't know about this stuff, would I go to hell?" "No, but you'd learn about it eventually and then make your choice." "Then why did you tell me?" "Well, for all I know, you've been looking for this stuff your whole life. How would you know if I might have satisfactory answers for you if I didn't let you know?" It's kind of like if you find a book or show or music you really like and also have a friend and know it'd also become a favorite of theirs. Are you going to wait for them to say "so, got any books/shows/music to recommend?", or are you going to find them and go "Hey, check this out, you'll love it!" ?