I think it depends on what someone means by "workshop".
On it's face, it's a neutral word. But nuagers speak a different language than do people from traditional cultures. A workshop by a respected indigenous educator, who is teaching history and other basic things that can be shared with the public, is one type of workshop. But to nuagers, "workshop" usually means they expect to be instructed in ceremony. Most nuage "workshops" include fake ceremonies as part of the experience. Personally, when I talk about "workshop culture" nuagers, I mean the monied non-Natives who flit from ceremony-seller to ceremony-seller, finding their only community in weekend pay-to-pray retreats, where there is no ongoing accountability to elders and peers.
My opinion as a non-Native is that each Indigenous community sets it's own standards for what is considered basic knowledge that can be shared with the public, and what is cultural property that is only to be shared with members of the culture.