Made me chuckle. I think I know what you mean about "expressing strong emotions" - This is how a lot of Europeans view Americans specifically.

I think the Australian version of naivety is more about meritocratic ideas and flat social hierarchies. Australians aren't usually loud or opinionated. European CEOs may not like it if an employee reaches out to them directly. In Australia, the startup CEO usually tries to be friends with the employees so it feels natural to reach out to the CEO directly and they often reach out to you. In Europe, I get the sense that CEOs believe that they're too important to talk to employees. This has been my experience at startups of similar sizes.