What it shows is that Harry is accepting the changed status of Butters. Butters is a big hitter in his own right now, not the cowering, terrified hanger on to Harry from Dead Beat. That he is every bit the equal to Michael, Shiro, Sanya or Murphy as a Knight.
Yes, and Harry is happy for him. I disagree with how you describe Butters in Dead Beat, that is how Thomas described Butters in Dead Beat, thankfully Harry didn't agree with him. Let's see, this cowering,terrified hanger on, with the help of Mouse, saved Harry from being slowly killed by Cassius. That is when I wrote a thread that Butters would be a Holy Knight some day, I was right. This little cowering, terrified hanger on, was scared out of his wits, true, but he did everything he could with in his capacity to aid Harry. This little cowering, terrified hanger on, was able to take instruction draw a circle, stand in it, and drum away on his polka machine to keep Sue going while all manner of monsters and hell was going on around him.. Butters never was a coward, scared out of his skin, yes, terrified, yes, but overcame it to aid Harry when the chips were down. I call that a very brave man.