Isn't the Jeju disappearance suspicious?

The police made mistakes, but the focus is entirely on them, whereas
the cause of death seems strange.
Someone mentioned they are from Jeju and said even men rarely go there because it's scary.
And they just went there alone and suddenly hanged themselves?
The official cause of death hasn't been released yet, but they were talking about hanging.
It's a bit strange.
They also said they found another body.
It reminds me of a story I heard on a horror radio YouTube channel about someone escaping from there.