1.16.5, 21w20a, 1.17.1, 1.18.1
Players without operator permissions cannot normally destroy blocks inside spawn protection, however, if a player were to ride a boat into some lily pads, they would be destroyed, regardless of whether or not they're inside spawn protection.
- Start a server, join it, give operator permissions to yourself, and switch into creative mode.
- Set the world spawn to your current location and summon a large area of water below your feet.
- Summon a boat and place down some lily pads nearby.
- Remove your operator permissions, and grant anyone else with them in order to activate spawn protection.
- Get inside of the boat and attempt to destroy the lily pads you previously placed by riding into them.
- Take note as to whether or not you can destroy lily pads by using boats in spawn protection.
Lily pads are destroyed.
Lily pads would not be destroyed.