I think the point is, human discomfort shouldn’t play a role in scientific reporting. Humans have projected a lot of human social elements (sex and gender roles, etc) onto animals and called it science, but it’s not objective. If we are self censoring, we can’t effectively share knowledge with others and we might miss important things down the line.
Yeah, I’m suspicious that at least Warren isn’t on that list given her performance in the last primary was higher than several of the folks there. Bernie could be more polarizing (and is also quite old, if that’s the problem) but obviously I’d be interested in his statistics as well.