Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=false, so the bar is lower, but the description adds nothing beyond restating the delete: it does not say whether deletion is permanent, what happens to exhibitors assigned to that category, or whether related records are orphaned. For an irreversible mutation this is a meaningful gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.