Not entirely wrong, but I don’t think that’S the main problem. I think the bigger problem is that they just don’t want to be “bound” by precedent at all, and thus shy away from really doing some systematic world building. The closest there ever was to an attempt of giving us an overview of cultures, distances, populations, rules and concepts around magic, tech, laws and politics, and all that cool stuff that makes the world feel real was still the Pen&Paper-RPG. Which it why it was so definitely decanonized.
“My team believes that continuity exists to enhance a story, not to tie the hands of creators”, Sean Copeland, the Historian Supervisor famously said. And the statements of another presumed ex-Historian pretty much back that up.
Many cooks are one thing. What we have is many cooks, with a vague recipe.