This is all the more surprising given that there is a Developer Advocacy team that is 'tasked with supporting the technical communities who use Wikimedia web APIs and software projects to spread and improve free knowledge' and 'to actively recruit and mentor new technical contributors', but who seem to perceive their role as protecting the organization from those very volunteers. I often encounter an attitude that says that we are incompetent noobs that must be managed by staff, and any error or lack of familiarity with WMF internal systems can be met with derision and sarcasm.
There is no doubt that WMF applications and infrastructure are an extremely valuable resource, but it would be nice if volunteers could be similarly regarded. I have spent much of the last 10 years working on projects that further WMF goals and core values. I would prefer to do so in a collegial or even collaborative way.
The staff who manage WMF systems and infrastructure are smart, competent, and well organized, but they are not very generous. They seem to regard the rest of us as barbarians at the gate.
I have hesitated to write this, but I think it needs to be said.