Even if we or an angel from heaven should preach a gospel contrary to the one we preached to you, let him be accursed… If anyone is preaching to you a gospel contrary to the one you received, let him be accursed.” (Galatians 1:8–9)

Martyrdom belongs to witnesses of Messiah, not to mouthpieces for a different gospel. Free speech isn’t the Cross. Test the claim by the fruit and the message: if it isn’t the apostolic gospel, it isn’t martyrdom. It's deception. (cf. Matthew 7:15–20; John 18:36)