No. Almost all organisations have rates for employees. The PM needs to know the rates for each team member, not the actual salary. At most this might give the PM an indication on how much a person earns (by comparing with its own salary and rate) but not an exact figure.
Using a rate for employees its not related to having or not a transparency policy, it's just an easier way to figure out costs. Costs per employees are not only dependant on salaries but should also include hidden costs like logistics costs or organizational costs.