It's also a way to sound "posh" (sorry Londoners I'm stealing this term just this time ahah) in my opinion.
Like most guys his age nowadays, I think he's less innocent than it seems...
Let's make a veeery approximate estimate of his family net worth. He said that in a good year they could sell around 10 properties. Romolini has been founded in 2004.
2021 - 2004 = 17 years since foundation of the Company. Let's say that since it's origin, they have been able to sell a number of properties that's half of what would be considered a good year, so 5 properties per year = 85 properties since 2004. A luxury property in Italy can cost anywhere from 2M to over 100M but let's say that on average every property had a price of 5M = 425M. Their fee is 4-5%, so let's say 4% = 17M.
This equals to 1M per year. I'm pretty sure they take home at least 30% = 300k, If they've been good thrifty Italians, they should have invested no less than 25% = 75k x 17 years = 1.275M + compound interests, family home/s and probably granparents inheritance. I think we're talking about 2-3M, at least. In Italy a 2-3M net worth gives a "purchase power" (better call it a "lifestyle power") that corresponds to that of a 4-5M net worth in the US. Certainly a good catch, I'm not surprised that he's single!