Why do you think the peoples of the Middle East did not eat pork? Until recently, if pork was not fully cooked, you could die from eating it. The Bible helped to save lives. The Ten Commandments are just common sense.
Try reading it. You might learn something. Lighten up, which means, let some light in your heart.
No, pork was considered spiritually unclean. Where in the Bible, or the Torah, does it say that it can be made spiritually clean by cooking? God said don't eat it so you don't eat it.