The warranty does not -- only if you have insurance (Complete Care) is the display covered against accidental damage.

Yes, the warranty covers Accidental Damage. I faced the same situation a year back and I contacted them repeatedly via email  & via phone in order to reach to a solution and finally got a "FREE" screen Replacement. 

If so, you were granted an exception;  the warranty terms state accidental damage is not covered.

https://www.dell.com/learn/us/en/uscorp1/terms-of-sale-consumer?c=us&l=en&s=corp&cs=uscorp1