Yes that is the meaning of ‘them’.
And first, I don’t believe any claim of them being repentant.
Second, killers claimed to be repentant still don’t merit even a second of stage time that could go to those who never killed in the first place!
If they’re not repentant, why do they say what they did was wrong, and why do they advise others not to do what they did?
Really? Earlier you asked about Christians and their feelings toward those who have killed. Do YOU profess to be a Christian? If so, have you read the New Testament? I only ask because based on YOUR theory a huge portion of the New Testament doesn't "merit even a second of stage time."