[toyg]

> This shows that the poem quickly found an audience that was not familiar with all the references.

It think it's a bit of both. Dante moved in high circles, particularly after he was exiled; and as an intellectual at court, he was effectively tasked with being an entertainer to his masters (which he didn't like, but had to accept to survive). In that context, creating work that requires active engagement from the audience, basically quizzing them around historical and literary knowledge, would have been of great value - and of great fun. Imagine people chatting around a fireplace or a banquet table, and Dante reciting a small verse - challenging someone in the audience (particularly other intellectuals he'd be sharing favours with) to go "I know! He's talking about such and such!". And when it came to the then-contemporary popes and rulers, everyone would laugh at the satirical tones, like you would with a stand-up comedian delivering a joke about "the orange man".

Comic book folks might be familiar with "The League of Extraordinary Gentlemen" by Alan Moore. That follows a similar approach; most people will recognize enough of the main characters to follow the story, but very few will get them all - which is why third-party commentaries and companions exploring them, have been pretty popular.