When you bring a foreign word into a language, in this case into Spanish, you are determining at that very moment what gender or type of word it is and grammar has little to do with that, because its a new element coming into the language. Since we are not translating "espuelas" here, the gender choice is based upon other reasons.
As for Skull, he can lie, deny, bring all these imaginary Latino girlfriends he had, but we know what a xenophobic mother ing bas he is. He might not have any problem with Latinos that are more American than Latinos, with Latinos that clean his toilet and "mind their own business", or Latinos that go to wars for the US, but he is one mother ing xenophobic piece of ignorant . On a side note, these Latinos probably go to this wars because that's their only ticket out of a miserable life, because their are, statistically speaking, confined to poverty, so they risk their mental and physical integrity and their very lifes in wars whose real reasons are miles away from their grasp, only so that they can allow their kids not to go through the same drama one day.