Maybe there’s an unspoken “Have more Italian children so we don’t lose out to immigrants” in there? After his publicity stunt going to the US southern border it’s certainly a possibility.
Fratelli d'Italia (Brothers of Italy) is the descendant of Almirante's Movimento Sociale Italiano (Italian Social Movement) who carried far right-wing politics into the Italian Republic after WWII and the Resistance. Fratelli d'Italia is as far right as it gets.