Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=false. The description adds one useful behavioral detail beyond annotations: deleting a saved view does not affect documents. However, it does not explain what happens if the id does not exist or whether the deletion is reversible, though those are partially covered by the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.