I somewhat agree with your thesis in Xeonophobia however, being a native born Californian I find Spanish or Spanglish not that objectionable in Xwords. I do not speak the language but by osmosis most Californians know quite a few Spanish words. I'm not sure, but I would guess at least 20 percent of California cities are Spanish named, e.g., Los Angeles, San Francisco, San Diego and Palo Alto to name a few. Sooooo, a few Spanish words are not that objectionable in Crosswords, at least here on the Left Coast.