Of course, never use these at govt bldgs, at the border etc. So far, no problems. Even if say, USC football requires this, security will be overwhelmed and I doubt mr. minimum wage toy cop actually cares about the card being real or not.
Regarding grey hair, 2 years ago at a store, an obviously senior citizen (with a cane) bought wine, and she took “her time” looking for her ID, for which the idiot clerk didnt read the mood of the long line to just let her pass. BUT NO, it dragged into 15 minutes until one guy at the back of the line said “what is wrong with you?? She’s older than everyone in this line combined!”
The clerk should have put a pause on the lady’s sale and rang up other customers while she looked for her I.D. I have family who work the retail business and the hold on sales is a common action. Two years ago, the I.D. check was a policy of Walmart and the employee was responsible for the I.D. check. Would you risk your job to not observe company policy? If you were fired because of that failure, I doubt you could get another job as a cashier.