Your disposition is needlessly antagonistic.
Moreover, regardless of what is common to every standard cable, anyone is free to put their own labels on their own cables to suit their needs. Not every solution has to be complex bureaucratic uniformity.
> I just outlined for you the most common disability, it's particularly easy to avoid since they can still actually see.
Are you even sure that color blindness is more common than blurred vision that makes it hard to discern small symbols?
If you say so, but it seems necessary to counter your apparent lack of empathy for people without perfect vision. I don't feel bad at all about that.
> Moreover, regardless of what is common to every standard cable, anyone is free to put their own labels on their own cables to suit their needs.
Now you're just bending the discussion to your will.
How is that any more helpful than me accusing you of an apparent lack of empathy for people with vision that can discern colors better than small symbols?
> Now you're just bending the discussion to your will.
Your argument was that not making all cables in a way that addresses all needs is saying "screw them all" to anyone else. But nothing has to work that way because total uniformity is not actually mandatory. It's completely reasonable to have a default that works well for most people and use something different for the people who need something different.
So your basically saying screw them all since it's impossible to include everyone? I just outlined for you the most common disability, it's particularly easy to avoid since they can still actually see.
> the rare person who is monochromatic can use the same solution as someone who is completely blind.
...how would you like to be told to learn brail in old age just cos your eyesight isn't quite good enough to read some small print?
No, that's just awful. Shape first, colour purely as an extra, then brail if the symbol is not relief or discernible enough, this is absolute basics of accessibility. This also helps everyone and functions in very low light since we all have low sensitivity to colour compared to luminescence, more so the older you get