why Libertarians weird me out

It's all the asterisks.

1. Do not intentionally hurt anyone who doesn't deserve it^*. That's unethical.

2. Make a good faith effort^* to ensure you are unlikely^* to accidentally hurt anyone who doesn't deserve it^*.

3. If you do accidentally hurt someone who doesn't deserve it^*, make satisfactory^* reparations.

^* You define this all by yourself, using any manner you wish.