Personally, I am not a fan of even tinting rear lights. In this world of ever increasing law suits, all that is needed if someone rear ends you with your tinted tails, is our claim for damages, especially if an expensive medical injury component to you or your passengers, is for our reduced-output light tails to come to the attention of a sharp LEO investigating the accident, a lawyer or the insurance company’s claims adjuster.
Let alone if in the fog or smoke or whatever, if your dimished-appearing tinted tails caused someone to hit you when they might not have if you have bright OEM complete tail lights...
I have done 35+ mods to my car, but call me too cautious, or whatever, but tinting my tails is not one of them. In fact prior to my recent new cars having OEM brighter LED tails, in the last decade, I would mod my earlier cars to increase by taillight brightness to reduce someone running into me.