> How is not disclosing a salary range in itself discriminatory?
It's discriminatory as a matter of law because the law defining it says so.
It's practically not inherently discriminatory, but it's a technique which increases the opportunity and difficulty of proving arbitrary discrimination, including on prohibited grounds, and which serves no other purpose other than enabling difficult to certainly identify (by the target) discrimination (both on prohibited grounds and otherwise).
It's discriminatory as a matter of law because the law defining it says so.
It's practically not inherently discriminatory, but it's a technique which increases the opportunity and difficulty of proving arbitrary discrimination, including on prohibited grounds, and which serves no other purpose other than enabling difficult to certainly identify (by the target) discrimination (both on prohibited grounds and otherwise).