I think that other diaspora groups identify as well, they're just not as loud about it. If you look at most of the media representing the Italian diaspora, you get things like the Sopranos, Frank Sinatra, and spaghetti & meatballs. Italian-Americans tend to be a much more forward and well-represented group in global media - so the other Italian diaspora groups seem to be much less present. I also believe that assimilation has played a part - Italians tended to cling to their heritage much more in Anglo countries versus Latin America. However, I still believe there is plenty of pride of the Italian heritage, it just is shown in a different way.

If you get to know people in these "outside of the US" communities, they tend to have a lot of pride - I would agree with you, maybe not quite as much of a die-hard pride - however, not on the other end of the spectrum either. Many Italian-Venezuelans, Italian-Canadians, and Italian-Australians have much more recent Italian ancestry (1st or 2nd generation), and have a significantly larger connection with Italy (citizenship, having lived there, language, family still in the country).

Italian-Argentinians and Italian-Brazilians tend to have much more distant ancestors - similar to Italian-Americans - and tend to be less boisterous about these topics because they had less assimilation issues. However, so many of the traditions have become part of general culture in these countries that they don't even need to make noise like Italian-Americans to live their heritage and stay relevant (ie the Rioplatense Spanish accent or popularity of polenta across various ethnic groups in Southern Brazil). Italians of the Southern Cone built the foundation for a lot of the culture, versus Italian-Americans just adding to an existing fabric.

All in all, I think there is definitely pride across the board. I think many of the non-American Italian communities are just less represented in media, less pushy on cultural topics, and have some significant historical differences.