The Bug

Turtle Eggs can be destroyed by Armor Stands, despite them being a more decoration item instead of a 'mob' or player. However, not all entities destroy Turtle Eggs, examples of which include shot arrows, boats and minecarts.

Note that if the gamerule mobGriefing is set to false, it prevents this from happening.

Therefore, it would be expected that an Armor Stand would be incapable of destroying Turtle Eggs.

How To Reproduce

1. Place down some Turtle Eggs, and then place an Armor Stand on top of those eggs.
2. Note how the Turtle Eggs slowly break due to the Armor Stand being on top of them.
3. Placing a Boat/Minecart over the Turtle Eggs don't break the eggs, nor do shot arrows, or any other non-living entity.