Agreed, it's a curious choice
We'll have to see if they can make it work. Maybe that ship is an engineering prototype...like the shuttle Enterprise, never intended for spaceflight. But the trailer shows it designated 1701, doesn't it?
It's probably earthbound to facilitate some aspect of the story. To inspire a motorcycle-riding Kirk, I suppose.
I'll be curious to see if they have Jonathan Archer at the ship's dedication (he supposedly passes away the day after watching the 1701 leave drydock).