Mud flaps in Colorado?

[cstork]

Tesla is offering free mud flaps in winter environments (Canada, Norway), but not in Colorado. We currently have very slushy roads. Do they help much? Should I get 3rd party mud flaps?

 

[DirtyT3sla]

I did some mud flap testing here

and I was pretty impressed with how much mud they block. That said, my car still gets completely dirty driving on dirt roads of course I'm sure they block some rocks! Necessary? Probably not...