No the agenda bit was: Showing the real effects of diphtheria, something we vaccinate against routinely but most people alive today have never seen. A short comment about how "people are getting complacent". Juxtaposed with: some views about avoiding medication which most people would find ridiculous and shocking. Meant to highlight what it was actually like when the need for vaccines was more immediately obvious, and the idea that avoiding medication based on a whim is ridiculous. It wasn't as overt as the part where all of the Asian community was vaccinated, as you say, that was just good practice.
As I said I don't think it's a bad message, it just amused me.