It's really immaterial whether the accused knows the fine print or not. Here's a thought experiment I did on myself. I have to chose between the following two.
1. Challenge the accusation. There's a net probability of 1% of me sent to prison for 35%.
2. Plead guilty and face prison time of 7 years.
I'd chose #2 because the prospect of spending 35 years in prison terrifies me!
Reporters parrot 35 years probably because for an accused facing 35 years is a real prospect, however improbable.