Coupled with the organization's stated and written policy to destroy and "dispose of quietly and without sorrow" all who criticize them, I hope it's not too hard to see why it's not as simple as you're saying it is.
Being a political prisoner is only valuable if you live long enough to publicize your cause, particularly if it's not a well-known or sensational one.
And I fail to see how seeking asylum in another country is ipso facto a "grave error... legally and morally." We encourage others to come to the US under similar circumstances (i.e., the accused believes they are dealing with a kangaroo court and have been prosecuted for political reasons). Isn't it hypocritical to brand asylum seekers as morally wrong when they happen to be coming from the US?