It's programmer's version of "it's not black or white".
In this case, a program isn't "accessible" or "not accessible" but rather degrees of accessibility. Not everyone is 100% blind, so small accessibility features makes it easier for them while not being accessible to 100% of the population.
In this case, a program isn't "accessible" or "not accessible" but rather degrees of accessibility. Not everyone is 100% blind, so small accessibility features makes it easier for them while not being accessible to 100% of the population.