As I was reading your article he first time I saw the ’stigmas’ form and immediately I corrected mentally ’stigmata’. The problem is that I was thinking about this issue just yesterday, and how so many people stick to the original plural form of foreign words without understanding why. The ‘English’ plural forms are often seen as incorrect or uneducated, but I think they have their validity. In German, we have he words Hobby and Baby, and their plurals are ‘Hobbys’ and ‘Babys’, as we don’t have the -y to -ies rule. Sure, for any English speaker it looks horrible, but it’s fully OK for us. But we still say normally ‘Kommata’ instead of ‘Kommas’ (German for comma).

BTW, I think many people will associate the word stigmata with the holes left by the nails on the hands and feet of Jesus after the crucification (just a ref so short before Easter).