That's not really ScienceMarchesOn though, as it was well known that veloceraptors were pretty small at the time the movie was made. I remember reading a statement from Spielberg (though it could have been someone else working on the film) looking at some recently discovered (at the time) Utahraptor fossils and saying "... we want THAT in our film."

The basis for their Raptors where Utahraptors.

Doesn't explain the baldness

Paleontologists didn't know raptors had feathers until 1998.