I disagree. I believe everyone has one's own individual, unique relationship with the Lord.
People can ignore that relationship, but I believe whoever does not ignore it is in good enough shape, spiritually. Anyone who sincerely acknowledges that relationship will have knowledge of good and bad, right and wrong, etc.
As I see it, "sin" is violating one's own knowledge of those things as understood in one's own relationship with the Lord--which of course we all still do from time to time. I have no doubt that there are 'wrong' and 'bad' that are universal, but no individual can say with absolute certainty what those are. Those mentioned in the Bible were put there by human beings like you and me.
That's what I believe, just as you have your beliefs. I realize that you are free to accept or reject my beliefs. Of course, I am also free to accept or reject yours. .