It is, however, encouraged that you not watch the third.
Nah, some things you just need to watch. Just for the sake of becoming more cultured.
But seriously,
Godfather III isn't a terrible movie. As a mob movie in it's own right, it's actually pretty decent. It just sucks because it's nowhere near as good as the first two movies. But, honestly, it can hang with a ton of other mob movies any day.
But, yeah, I'm willing to agree with Adami that Chino probably hasn't even watched any of these yet lol