Some of the delicacy, flow, and strength of excellent speech is recognized through cultivated literary taste. An expert may immediately perceive subtleties of metre, construction, and meaning that a beginner requires help to notice.
This does not permit treating private preference as conclusive proof of every academic claim. In explaining literary superiority, one should identify discussable features: word placement, syntactic effect, and fitness to context.
Balanced conclusion: aesthetic perception can be genuine, yet teaching it responsibly calls for explaining the features that produce the perception.