I don't disagree that the personality cult around the Kim's is a troubling part of the DPRK's political culture, I don't think that kind of thing is necessarily conducive to a healthy democracy. But, this is a country that has been forcibly chopped in half, bombed so much that people were forced to live in caves, and has been cut off from the global economy by US sanctions.

If you expect a country to endure that without issues, then you're crazy. If you want to end that cult of personality, you should be advocating for an end to sanctions, and end to the Korean War, the removal of US military bases and an internationally mediated settlement between North and South Korea about what the peninsula's future might look like.