I do not work in construction so of course I cannot answer the "factual points" about standards and committees. I am, however, always curious to learn more, so I'm all ears if anyone cares to elaborate.
Yes, Italy is a corrupt country with plenty of building irregularities. However, shock and horror, not all Italians are corrupt; those who aren't typically choose to live / build / sell properties which have been properly built with all the permissions, which are those I have experience of. In those, crooked walls, front doors which don't seal etc were non-existent. In the hundreds of properties I must have viewed in England, they are common. What can I say, maybe my experience, and that of every single European I know, is not representative.
England is not a seismic country so you cannot compare this aspect - you do not know how well stuff would have been built her if it had had to withstand earthquakes. So don't compare apples and oranges.
AFAIK, despite the Daily Express revolting headline asking if the Greenfell tragedy was the fault of EU rules (it wasn't), something like that has never happened in Italy; oh, and, one year on, who's in jail for that? Let's not turn this into us vs them - let's just remember nowhere is perfect or ideal.