Spielberg did reference her songs and used some of the lyrics as puns in his full speech - and even me as an observer and not really a fan recognize the references.
I may have misread your quote, I thought you meant can anyone IN her fanbase recite her songs? I think what people find remarkable is the sheer SCALE of her base.
Most people don't know the names of the collaborators. Same with Madonna. It's been said they don't add that much to most of their songs. They add a few lines and slap their name on it for the royalties because that's where the real money is in the music business.
In my mind a great songwriter writes solo or in a team.
I see what you mean. I meant to say no one outside her fanbace. Typo on my part.