After being spared on a Normal Route, SNEO has the line "My days as a [Long-Nosed Doll] are over!!!". We know he hates being a puppet, "doll" is a synonym for that, so that's a negative descriptor. But it's curious to me that he doesn't just say "doll", but specifies "long-nosed doll", which implies that's also negative.
I could be reading too much into it, but the word choice here may imply that he doesn't like his long nose, which, if true, would mean that Tenna loving his nose so much he literally got himself a fake one to match is an example of him loving the traits Spamton was insecure about.