>So is the principle to put "reason over emotion" or to follow the original stoics?

Why in this case would there be tension between the two? The original stoic philosophers came to the conclusion about humans being social animals through a rational argument.

>Regardless, substitute lonlineness for another situation outside of humans being social animals and we arrive at the same thing

You are missing what I stated about emotion being a valid impetus for rational analysis. So the eventual questioning and self-examination should happen for any such hypothetical, regardless of the specific situation one has to repeatedly experience. In stoicism acceptance and reason over emotion are just tools; means to an end, not the end itself. The end is "living the good life".