>>213698382
Not an expert, I think it's related to regional accents that spawn from the Canary Islands, since they were the passway to America. They just use a softer s for all "c"s. For example, "cecina" (cured meat) in Spain would be pronounced /zezina/ whereas in most Latinamerica they'd sound it out as /sesina/.
>>213698394
Maybe I'm just a fish being told about water but I don't hear the "lisp", it's just how the letter sounds that tells it appart from /s/. But yeah, it'd be more of a /z/ sound.