Well to be fair Ms LuPone is of Sicilian ancestry and they speak Italian which is a Latin based language as is Spanish so I could see her getting the pronunciation right. Argentines also tend to speak Spanish with an Italian inflection.
Julie Covington's "daycamisados" is grating for how simple it is to correct but nobody ever thought to which means nobody looked into any of that beforehand! The chorus do pronounce it right during "Santa Evita" ("De los tiranizados, de los descamisados"), so it was always a puzzlement to me why she wasn't corrected.
She is my least favorite Evita. The mispronunciation notwithstanding, she sounds so bored and lethargic in the concept album. I always want to scream,
"Put some life into it, woman!!!"
Salve, Regina, Mater misericordiae
Vita, dulcedo, et spes nostra
Salve, Salve Regina
Ad te clamamus exsules filii Eva
Ad te suspiramus, gementes et flentes
O clemens O pia