It is not up to other members to chastise people about what they have chosen, or why, especially if it doesn't affect you. Some people like KOs, or have a reason to use them.
You're spoiling someone's rare opportunity, who has several legit items to autograph as well.

As for the topic - the title is to be changed to reflect that KOs are not to be sourced through this site (as per the rules/userguide), you need to search online or ebay yourself.
Asking about other toys are fine.