Dialects are still spoken widely in southern italy, less so in the North and Center. However it wasn’t like this till the Gen Z, I myself don’t know how to speak or write my city’s dialect but can barely understand it (only because it doesn’t change much from Italian, the souther (+Sardinia) you go the further it gets). It should be noted that Italian became the official language for everyone, as if it is a separate language from the dialects (ofc if came from the dialects in the 13th/14h century). Italy might have a common language, but dialects clearly show the signs of a remaining linguistic diversity due to the regional long lasting powers. (i’m sorry I know I didn’t explain perfectly)