Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint=false and destructiveHint=false; the description adds nothing about whether users are only detached from the squad, whether the change is reversible, or any limits/rate constraints. The bare word "Delete" sits in mild tension with destructiveHint=false, leaving the actual blast radius unclear to the agent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.