As it was changed in vanilla that you are now able to walk on farms, crop sticks should not break when walking on.
- This adds no value to the game and just annoys the player.
- Items that drop can land on the block the crop sticks are placed on and therefore can become unrecoverable. As the player has no way to influence where the items drop this is just annoying.
- When compared to walkable wheat farms, crop sticks are the worse alternative, therefore using the agriculture system for generating food is currently a bad choice just because crop sticks break.
Note: I am all for breaking sticks if you jump/fall on them.