Well, they left out the part where he was likely gay. Not that it had bearing on the plot. Did they talk about him being a vegetarian?
Also he worked collaboratively A LOT. This whole image of him alone in his studio--for the day, that was just weird. The dude was EXTREMELY social--always at parties, dinner, and social events. He knew everyone, and worked with nearly all the artists of his day. His studio was not some quiet contemplative place. He spent time drawing in the streets, picking up commissions from lords (my favorite is the mechanical lion).
It just weirds me out that his studio has nothing but Captain Janeway there...
We have evidence of this, Benvenuto Cellini wrote the first autobiography. He was an artist, and the account of his own life, and the kind of hustling needed in order to make $$ as a artist and draftsperson is pretty interesting. Cellini, like a lot of other artists writing in his day, mentions DaVinci--and gotta say he gets mentioned a bunch in documents of the day.