The fact that you tried to equate professional entertainers with military members tells me that your argument is 100% invalid. Those two should not be mentioned in the same sentence. One is prepared to give their life to better the lives of others. The other is simply there to entertain.
I believe that all humans, athletes, movie stars, doctors, lawyers, school teachers, Soldiers, Sailors, Airmen, Marines, stay at home moms, Uber drivers, and folks from all other walks of life, make conscious decisions to do things. Some choose to play a game, some choose to play make believe, some choose to save lives in the OR, some choose to defend others accused of crimes. Some choose to teach young children, some choose a life of service and the offering up of their life to defend the freedom so cherished by others, some choose to spend their lives caring for their families by maintaining a home for them to come to after school or work so they can relax, some choose to drive around shuttling strangers to Starbucks, sporting events, malls, or wherever they're going, and many choose other endeavors. Alas, some choose to turn to drugs and/or alcohol when the going gets tough. That is no one's fault, but the person who makes that choice. To blame it on your boss is childish.
To compare treatment for PTSD (which, I believe (though it's nearly impossible to prove) is far over diagnosed) caused by the horrible things our troops witness in combat to a junkie choosing to be addicted to drugs is asinine. PTSD - not voluntary. Drug addiction - voluntary.
If someone's profession is to "entertain" as you call it it doesn't lessen their value as a human being because they chose a different profession. Additionally, I would be willing to bet the most forms of drug and alcohol addiction stem from another root cause source as a coping mechanism to another form of mental illness, whether that be PTSD, depression, etc. My point is that people who suffer some sort of trauma such as PTSD may turn to drugs to cope with the situation. The same type of thing can be said for pro athletes in the same manner mentioned (head injuries and depression)specifically in the article I posted. I think it is asinine to think the NFL can claim plausible deniability to the results of injuries caused by the hands of their activity that has now literally been proven to cause severe brain injuries. Those injuries have more downstream effects on the mental state of the players that all stems for the activities
We can agree to disagree and leave it at that.