Darned right it applies to more than gamers. I've fought color blindness descrimination all my life. When I worked for a public utility, I couldn't get into the apprenticeship program for lineman or machine shop (either machinist or metal fabricator) because the apprenticeship rules banned color blind people, even if the specific trade did not require the ability to recognize all colors. By the time they did change it, I was too old to qualify (age 35 was the upper limit; the ageism wasn't eliminated until I really was too old).
Everytime some moron wanted to color code office records, etc., I would speak up. They were surprised to find out how many employees were color blind to some degree or another. While I do see color, it's not the same as other people. I have both red/green (most common in males) and blue/green (most common in women) although, according to the tests that use a zillion little dots in a circle that form a number if you have a certain kind of color blindeness, I can see only in black and white (hah!). The color that has given me the most trouble is red. When red LED displays were still common, I had one heckuva time reading the darned things, especially in bright light. In daylight, I had trouble telling if a red traffic light was on; I got by by assuming that if the yellow or green light (which looks white to me) wasn't on, then the red was. The newer LED trafic lights are brighter so it's not a problem anymore.