" It appears this writer really wants to interpret "not just one" to mean that if some thing is "not 1" the selection should be "more than one" (justifying him declaring "hence not singular"). I disagree: Pepper-ball rounds appear to be paintballs but are filled with PAVA (artificial pepper spray) https://collinhraiq.vigilwiki.com/7250223/cheapest_bullets_no_further_a_mystery