Felix was this bold and confident in his statements only because he was certain that Elder Dragon would never opt for surrender.
In this battle, he had only two choices, either death or victory.
Felix was making him understand that if he decided to bow down, he would spare him and kill him normally, allowing him to get revived.
Obviously, this wasn't going to happen as well, which meant everything that Felix said was just to piss and humiliate Elder Dragon even more!
'My saga can't end like this...I have built this entire era with my own hands...It can't end like this...It can't...'
Felix's taunting words sure took a toll on Elder Dragon as his mind and heart refused to admit that he had already lost his Grand Supreme Title.
A title that he possessed ever since the foundation of the SGAlliance as no one managed to take it from him.