I'm not going to argue analogies with you. The purpose of an analogy is to make clear to someone something they don't understand. You can't actually convince someone of something they refuse to believe with an analogy.
Ok, let me use an analogy. Let's substitute the category. It would look like this:
Is there a "left-handed perspective"?
Another way to put this would be to ask if left-handed have other common traits where one could predict their perspective.
My hypothesis would read like this:
left-handed have other traits in common that allows to predict their perspective on a variety of topics or situations
Where do I come up with this idea? I speculate that left-handed is a trait that comes from a gene. This particular trait molds the brain to think and react in certain ways in specific situations. This molding affects the way individuals think, thus creating a distinct left-handed perspective.
There are several ways to test this hypothesis, but I think a survey is a good start. We could survey 1,000 people (randomly picked around the world. We would survey more than 1,000 but would only consider the answers of those who are atheist, to mask the survey). We would have our same size control group where the common trait be something else. Then we would look for common traits.
It's important to point out that the most we could conclude is that the average left-handed is more likely to be more of this or that. For example, the findings could be:
left-handed are more likely to be more cautious than the general population, on average.
left-handed are more likely to be more ambidextrous than the general population, on average.
left-handed are more likely to be smarter than the general population, on average.
And so forth.
From this, one can guess the general left-handed perspective on specific topics, issues, etc.
This is only a mental exercise and pure speculation (on my part). I do think it is an interesting topic to consider.