I see most of this argument being derived from a stubborn refusal to include "Template" as a character trait. With that, this becomes easy -- either the character sheet has "Template: Pure Mortal" on it, in which case the character is wholely non-supernatural but does get the +2 refresh bonus that is built into the Template, or the character has "Template: <anything else>" on it, in which case there's no +2 refresh bonus.
Even without having an explict "Template:" entry, though, every character does in fact have a Template defined on his sheet in the form of a High Concept, which is linked to Template. By this, I mean that all supernatural Templates must have a High Concept that references them, and the Pure Mortal Template should (in my opinion, at least, and I believe this opinion is shared by those who chose #3 in my survey) fail to mention any supernatural Template.
That's basically the point I was indirectly trying to make in my little survey. If you want to have a supernatural aspect, that's cool. If your table wants to let such aspects grant aspect to minor supernatural capabilities, that's great, too. But having a supernatural aspect is exactly the same thing as choosing a supernatural Template, which means that you are something other than a Pure Mortal. And anything that is not Pure Mortal should not get the Pure Mortal refresh bonus.
(Note, by the way, that none of the above precludes (a) taking multiple Templates (and ensuring a High Concept that references all of them), so long as none of them are Pure Human, or (b) changing your Template in a way that fits the storyline. In the latter case, for example, a Pure Mortal could be attacked by an RCV and become an RCI -- they'd take on the RCI Template by stripping off the Pure Mortal bonus, changing their High Concept in an appropriate way, and adding in powers from the RCI template.)