I mean, in here dragons are practically the same as us looking at ants (although I don't know about the comparison since I find they're fascinating creatures even though they creep me out), so destroying them because of a cake may seem absurd to both humans and dragons, but it's just like "those dudes pissed me off then destroy them", that's how much insignificant humans are in their eyes I guess ? It's just seem pointless to try understand their POV.