As far as I understand it, when the assessors think about who is excluded or included in the research, they don't include viewpoint diversity in that. They're not thinking about political diversity, so no, I'm not reassured at all.
I think the assessments about whether the research design is good, whether it's interesting or whether it's solid contain a whole host of implicit assumptions. When 90% of the people on that panel—maybe higher in certain fields—are making assessments about merit, interest and how innovative the research design is, if they share political opinions and aren't asked to think about the way in which their assessments are based on their own political assessments, and they don't have people in the room who call them out on that, I'm not reassured at all.