Dear God that's just stupid.
A ton of us have no problem having a model of the nuEnterprise alongside our old models. I don't think most kids or collectors would care either.
I'm not sure it was a stupid notion on Abrams part. He simply didn't want Star Trek competing with Star Trek for shelf space and dollars. Tough to compete with Star Wars and Super-hero merchandise when you're already competing with yourself.
I think the very idea that Star Trek is somehow competing with itself is stupid to begin with.
It's also some nerve for someone who is only borrowing
a property to tell its owner
what they can't do with it.
No way was CBS going to stop merchandising the rest of Trek just for one movie anyway, so it really was a stupid idea (or at best, arrogance).