Not really. When assessing the credibility of a source, you have two main questions: do they have the information you need, and do they have an incentive to lie? Industry-wide associations usually have significantly worse information than people who are actually performing the jobs at companies in the organization, and they also have a responsibility to their member orgs to get the best outcomes for them (i.e. represent information in a way that achieves member organization goals).

If I wanted accurate information on the state of hiring in an industry, I would look for someone who had recently performed sourcing/interviewing/recruiting for one of the big companies in the industry but had also recently retired, left for another field, or become a stay-at-home mom/dad. They have the firsthand information as part of their job, but they also have no dog in the fight and hence no reason to distort that information.

You have never published, have you? Your last paragraph is all about finding impossible sources whose credibility won’t be apparent to average readers.