Reminder that Spamton NEO wasn't only just a parallel to Kris
Everything about him also applied to Ralsei
Ralsei shares that same desire to be a real boy and free himself of his strings (the prophecy) but denies and suppresses it because of his "purpose"
When he saw Spamton "die" after trying to fight his predestined purpose he was fucking mortified on the inside. We know beyond a shadow of a doubt that Ralsei has been bottling up his emotions for quite some time, and this dialogue wasn't only him trying to convince Susie and Kris it doesn't mean anything, but also to convince himself
That's why he gets the Puppet Scarf

Reading this again with the context of Ralsei being bound to a prophecy he knows has a tragic ending, it's obvious why he's actually acting like this
He just saw someone try to fight their purpose and immediately "die" for it
He's trying to rationalize it to himself and write it off as meaningless so he doesn't end up like Spamton himself, keeping up a smile to suppress his pain and fear like he always does
He probably wanted to scream just as badly as Kris did
>and people thought this scene was evidence he's evil