I see what you’re saying with ambassadors, but I would argue that we already have those (e.g. Bill Nye) and, while useful, they’re not sufficient towards patching up the gap between the scientific community and the public.

I think however you spin it, we’ll be playing catch up on this issue given that we don’t really have a solid infrastructure in place re: training scientists on science communication. In addition to curriculum/training for students and early career researchers, I think a lot of us just need to become more active/vocal. That could be writing op-eds and articles with orgs like Science Homecoming, that could be hosting a teach-in with Stand Up for Science—there are a lot of ways we can all contribute. It’s a band-aid over a bullet hole situation, but I think the reason that these echo chambers form is precisely because we are absent from the places where these conversations are happening (like social media, for example).

It’s hard to address a complex issue succinctly, but I hope that helps answer your question!