I was hoping for concrete examples of people saying things along the lines of "I am a climate scientist, therefore my ideas about economics and politics should be immediately implemented".

What I see plenty of is climate scientists saying "Here is what I think is the current state of scientific knowledge about the climate. Now here is what I think should be done about it." but there's nothing wrong with that. (I take it we are agreed that climate scientists aren't uniquely disqualified by their scientific expertise from holding political or economic opinions.)

But I don't see a lot of people claiming that scientific expertise gives them the right to prescribe policy. E.g., the first thing I found when looking for what Jim Hansen has said and written in connection with the policy implications of climate science was this near the start of which he says: "I do not attempt to define policy,which is up to the people and their elected representatives, and I don’t criticize policies. The climate science has policy relevance, but I let the facts speak for themselves about consequences for policy-makers." which seems exactly right. (Of course he might be being insincere there, but I don't know of any particular reason to think he is.)

It looks to me as if Hansen (1) has strong opinions about what should be done about climate change, (2) is not shy about expressing those opinions, but (3) doesn't claim that anyone should agree with those opinions because he's a climate scientist. (He does also (4) claim that people should pay attention to what he says about the science because he's a climate scientist; that seems obviously reasonable.)

But I haven't by any means read everything Hansen (or anyone else) has said and written on this theme. Again: examples?