The point is to create a range in which both current and prospective employees can refer to. Obviously it's not perfect as that would require all information which would be a privacy concern.
Are you arguing knowing nothing is better than knowing something?
"Are you arguing knowing nothing is better than knowing something?"
No one is saying that. That is a gross misinterpretation of my statements.
"The point is to create a range in which both current and prospective employees can refer to."
A range based on what? The point being discussed here is equal pay. Ranges dont help if you have all the women at the low end and the men at the high end, hypothetically. If you just want to post salary ranges by position you can do that without publishing individual salaries.
How so? Even at 100 employees you might only have 5 tech leads. So the population of the subgroups matter.
"The point is to allow for more transparency, not perfect transparency."
What can we actually do with that transparency if it doesn't have the attributes necessary for meaningful comparison?